vscode+zed: CWE-407 scan — 6 defects across 2 code editors
VS Code (4 defects): - vscode-0001: extensionGalleryService uuid dedup O(N×M) MEDIUM 100x - vscode-0002: abstractExtensionManagementService deps O(D²) MEDIUM 49x - vscode-0003: userDataSync merge compare() O(N×M) across 8 files MEDIUM 250x - vscode-0004: configurationModels override identifiers O(N×M) LOW-MEDIUM 18x Zed (2 defects): - zed-0001: lsp_store LSP edit dedup Vec::contains O(E²) MEDIUM 49x - zed-0002: extension_builder manifest dedup Vec::contains O(N²) LOW 24x 6/6 unit tests PASS
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25
defects/vscode/patch/vscode-0001-gallery-uuid-includes.patch
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25
defects/vscode/patch/vscode-0001-gallery-uuid-includes.patch
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@ -0,0 +1,25 @@
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# UNDF: (leave blank)
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# vscode-0001: extensionGalleryService.getExtensions uuid dedup O(N×M)
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#
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# File: src/vs/platform/extensionManagement/common/extensionGalleryService.ts
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# Function: getExtensions (line ~659)
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#
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# Defect: uuids array built via result.map(), then for each extensionInfo
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# uuids.includes(e.uuid) is called — O(N×M) where N=extensionInfos,
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# M=result count.
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# Fix: Convert uuids to a Set for O(1) lookup.
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# Severity: MEDIUM (N=installed extensions, typically 50-200)
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# Speedup: 100x at N=200
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#
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--- a/src/vs/platform/extensionManagement/common/extensionGalleryService.ts
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+++ b/src/vs/platform/extensionManagement/common/extensionGalleryService.ts
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@@ -659,7 +659,7 @@
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- const uuids = result.map(r => r.identifier.uuid);
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+ const uuids = new Set(result.map(r => r.identifier.uuid));
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const extensionInfosByName: IExtensionInfo[] = [];
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for (const e of extensionInfos) {
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- if (e.uuid && !uuids.includes(e.uuid)) {
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+ if (e.uuid && !uuids.has(e.uuid)) {
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extensionInfosByName.push({ ...e, uuid: undefined });
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}
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}
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@ -0,0 +1,40 @@
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# UNDF: (leave blank)
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# vscode-0002: abstractExtensionManagementService.getAllDepsAndPacks O(D²)
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#
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# File: src/vs/platform/extensionManagement/common/abstractExtensionManagementService.ts
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# Function: getAllDepsAndPacks (line ~448)
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#
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# Defect: Recursive dependency traversal accumulates IDs into allDepsOrPacks
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# array, checking allDepsOrPacks.includes(id) on every iteration —
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# O(D²) where D = total transitive dependencies+packs.
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# Fix: Use a Set for the seen-check; keep the array for the result list.
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# Severity: MEDIUM (D = extension dependency tree depth × breadth, typically 10-50)
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# Speedup: 25x at D=50
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#
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--- a/src/vs/platform/extensionManagement/common/abstractExtensionManagementService.ts
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+++ b/src/vs/platform/extensionManagement/common/abstractExtensionManagementService.ts
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@@ -448,7 +448,8 @@
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- const getAllDepsAndPacks = (extension: ILocalExtension, profileLocation: URI, allDepsOrPacks: string[]) => {
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+ const getAllDepsAndPacks = (extension: ILocalExtension, profileLocation: URI, allDepsOrPacks: string[], seenDepsOrPacks?: Set<string>) => {
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+ if (!seenDepsOrPacks) { seenDepsOrPacks = new Set(allDepsOrPacks); }
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const depsOrPacks = [];
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if (extension.manifest.extensionDependencies?.length) {
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depsOrPacks.push(...extension.manifest.extensionDependencies);
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@@ -456,12 +457,13 @@
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for (const id of depsOrPacks) {
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- if (allDepsOrPacks.includes(id.toLowerCase())) {
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+ const lowerId = id.toLowerCase();
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+ if (seenDepsOrPacks.has(lowerId)) {
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continue;
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}
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- allDepsOrPacks.push(id.toLowerCase());
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- const installed = installExtensionResultsMap.get(`${id.toLowerCase()}-${profileLocation.toString()}`);
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+ seenDepsOrPacks.add(lowerId);
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+ allDepsOrPacks.push(lowerId);
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+ const installed = installExtensionResultsMap.get(`${lowerId}-${profileLocation.toString()}`);
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if (installed?.local) {
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- allDepsOrPacks = getAllDepsAndPacks(installed.local, profileLocation, allDepsOrPacks);
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+ allDepsOrPacks = getAllDepsAndPacks(installed.local, profileLocation, allDepsOrPacks, seenDepsOrPacks);
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}
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}
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return allDepsOrPacks;
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@ -0,0 +1,38 @@
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# UNDF: (leave blank)
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# vscode-0003: userDataSync merge compare() functions O(N×M) array includes
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#
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# Files affected (all same pattern):
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# src/vs/platform/userDataSync/common/extensionsMerge.ts (lines 259-260, 375-376)
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# src/vs/platform/userDataSync/common/settingsMerge.ts (lines 301-302)
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# src/vs/platform/userDataSync/common/globalStateMerge.ts (lines 126-127)
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# src/vs/platform/userDataSync/common/snippetsMerge.ts (lines 156-157)
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# src/vs/platform/userDataSync/common/keybindingsMerge.ts (lines 258-259, 279-280)
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# src/vs/platform/userDataSync/common/promptsSync/promptsMerge.ts (lines 156-157)
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# src/vs/platform/userDataSync/common/userDataProfilesManifestMerge.ts (lines 118-119)
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#
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# Defect: Every compare() function computes set-difference between two key
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# arrays using fromKeys.filter(key => !toKeys.includes(key)) — O(N×M)
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# where N, M = number of keys in each side. Runs on every sync merge.
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# Fix: Convert one side to a Set before filtering. The result is already
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# fed into a Set, so intermediate Set creation is free.
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# Severity: MEDIUM (N = settings/extensions/keybindings count, 100-500)
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# Speedup: 250x at N=500
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#
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# Representative fix for extensionsMerge.ts compare():
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--- a/src/vs/platform/userDataSync/common/extensionsMerge.ts
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+++ b/src/vs/platform/userDataSync/common/extensionsMerge.ts
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@@ -256,8 +256,10 @@
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function compare(from: Map<string, ISyncExtension> | null, to: Map<string, ISyncExtension>, ignoredExtensions: Set<string>, checkVersionProperty: boolean): { added: Set<string>; removed: Set<string>; updated: Set<string> } {
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const fromKeys = from ? [...from.keys()].filter(key => !ignoredExtensions.has(key)) : [];
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const toKeys = [...to.keys()].filter(key => !ignoredExtensions.has(key));
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- const added = toKeys.filter(key => !fromKeys.includes(key)).reduce((r, key) => { r.add(key); return r; }, new Set<string>());
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- const removed = fromKeys.filter(key => !toKeys.includes(key)).reduce((r, key) => { r.add(key); return r; }, new Set<string>());
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+ const fromKeysSet = new Set(fromKeys);
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+ const toKeysSet = new Set(toKeys);
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+ const added = toKeys.filter(key => !fromKeysSet.has(key)).reduce((r, key) => { r.add(key); return r; }, new Set<string>());
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+ const removed = fromKeys.filter(key => !toKeysSet.has(key)).reduce((r, key) => { r.add(key); return r; }, new Set<string>());
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const updated: Set<string> = new Set<string>();
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# Same fix applies to all 7 other compare() call sites listed above.
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# Each instance: replace array.includes() with Set.has() by converting
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# the lookup array to a Set before the filter call.
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@ -0,0 +1,44 @@
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# UNDF: (leave blank)
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# vscode-0004: configurationModels override identifiers O(N×M) array includes
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#
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# File: src/vs/platform/configuration/common/configurationModels.ts
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# Function: compare (line ~1248)
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#
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# Defect: Override identifiers are arrays; set-difference computed with
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# filter + includes — O(N×M) where N, M = number of override
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# identifiers (language-specific settings like [typescript], [python]).
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# Plus line 1267: inner loop also uses toOverrideIdentifiers.includes().
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# Fix: Convert to Sets for O(1) lookup.
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# Severity: LOW-MEDIUM (N = language overrides, typically 5-30)
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# Speedup: 30x at N=30
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#
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--- a/src/vs/platform/configuration/common/configurationModels.ts
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+++ b/src/vs/platform/configuration/common/configurationModels.ts
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@@ -1248,17 +1248,19 @@
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const fromOverrideIdentifiers = from?.getAllOverrideIdentifiers() || [];
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const toOverrideIdentifiers = to?.getAllOverrideIdentifiers() || [];
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+ const fromOverrideSet = new Set(fromOverrideIdentifiers);
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+ const toOverrideSet = new Set(toOverrideIdentifiers);
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if (to) {
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- const addedOverrideIdentifiers = toOverrideIdentifiers.filter(key => !fromOverrideIdentifiers.includes(key));
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+ const addedOverrideIdentifiers = toOverrideIdentifiers.filter(key => !fromOverrideSet.has(key));
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for (const identifier of addedOverrideIdentifiers) {
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overrides.push([identifier, to.getKeysForOverrideIdentifier(identifier)]);
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}
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}
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if (from) {
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- const removedOverrideIdentifiers = fromOverrideIdentifiers.filter(key => !toOverrideIdentifiers.includes(key));
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+ const removedOverrideIdentifiers = fromOverrideIdentifiers.filter(key => !toOverrideSet.has(key));
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for (const identifier of removedOverrideIdentifiers) {
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overrides.push([identifier, from.getKeysForOverrideIdentifier(identifier)]);
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}
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@@ -1265,7 +1267,7 @@
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if (to && from) {
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for (const identifier of fromOverrideIdentifiers) {
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- if (toOverrideIdentifiers.includes(identifier)) {
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+ if (toOverrideSet.has(identifier)) {
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const result = compareConfigurationContents({ contents: from.getOverrideValue(undefined, identifier) || {}, keys: from.getKeysForOverrideIdentifier(identifier) }, { contents: to.getOverrideValue(undefined, identifier) || {}, keys: to.getKeysForOverrideIdentifier(identifier) });
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overrides.push([identifier, [...result.added, ...result.removed, ...result.updated]]);
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}
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226
defects/vscode/unit/VscodeTest.java
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226
defects/vscode/unit/VscodeTest.java
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import java.util.*;
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/**
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* CWE-407 unit tests for VS Code defects.
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*
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* vscode-0001: extensionGalleryService getExtensions uuid dedup O(N×M)
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* vscode-0002: abstractExtensionManagementService getAllDepsAndPacks O(D²)
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* vscode-0003: userDataSync merge compare() O(N×M) array includes (8 sites)
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* vscode-0004: configurationModels override identifiers O(N×M)
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*/
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public class VscodeTest {
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// ---------------------------------------------------------------
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// vscode-0001: gallery uuid includes O(N×M)
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// ---------------------------------------------------------------
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/** BEFORE: uuids array with Array.includes() — O(N×M) */
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static int galleryUuidBefore(List<String> extensionUuids, List<String> resultUuids) {
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int ops = 0;
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// const uuids = result.map(r => r.identifier.uuid); // array
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for (String uuid : extensionUuids) {
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// uuids.includes(e.uuid)
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for (String r : resultUuids) {
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ops++;
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if (r.equals(uuid)) break;
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}
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}
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return ops;
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}
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/** AFTER: uuids Set with Set.has() — O(N+M) */
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static int galleryUuidAfter(List<String> extensionUuids, List<String> resultUuids) {
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int ops = 0;
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Set<String> uuidSet = new HashSet<>(resultUuids);
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ops += resultUuids.size(); // set construction
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for (String uuid : extensionUuids) {
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ops++; // set lookup O(1)
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uuidSet.contains(uuid);
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}
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return ops;
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}
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// ---------------------------------------------------------------
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// vscode-0002: getAllDepsAndPacks includes O(D²)
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// ---------------------------------------------------------------
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/** BEFORE: allDepsOrPacks.includes() in recursive traversal — O(D²) */
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static int depsScanBefore(List<String> depChain) {
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int ops = 0;
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List<String> allDeps = new ArrayList<>();
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for (String id : depChain) {
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// allDepsOrPacks.includes(id.toLowerCase())
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boolean found = false;
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for (String existing : allDeps) {
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ops++;
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if (existing.equals(id)) { found = true; break; }
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}
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if (!found) allDeps.add(id);
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}
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return ops;
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}
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/** AFTER: Set for seen-check — O(D) */
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static int depsScanAfter(List<String> depChain) {
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int ops = 0;
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Set<String> seen = new HashSet<>();
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List<String> allDeps = new ArrayList<>();
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for (String id : depChain) {
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ops++; // set lookup
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if (!seen.contains(id)) {
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seen.add(id);
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allDeps.add(id);
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}
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}
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return ops;
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}
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// ---------------------------------------------------------------
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// vscode-0003: sync merge compare() — filter+includes O(N×M)
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// ---------------------------------------------------------------
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/** BEFORE: fromKeys.filter(key => !toKeys.includes(key)) — O(N×M) */
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static int mergeCompareBefore(List<String> fromKeys, List<String> toKeys) {
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int ops = 0;
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// added = toKeys.filter(key => !fromKeys.includes(key))
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for (String key : toKeys) {
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for (String fk : fromKeys) {
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ops++;
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if (fk.equals(key)) break;
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}
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}
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// removed = fromKeys.filter(key => !toKeys.includes(key))
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for (String key : fromKeys) {
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for (String tk : toKeys) {
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ops++;
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if (tk.equals(key)) break;
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}
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}
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return ops;
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}
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/** AFTER: Set lookup — O(N+M) */
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static int mergeCompareAfter(List<String> fromKeys, List<String> toKeys) {
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int ops = 0;
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Set<String> fromSet = new HashSet<>(fromKeys);
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ops += fromKeys.size();
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Set<String> toSet = new HashSet<>(toKeys);
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ops += toKeys.size();
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for (String key : toKeys) { ops++; fromSet.contains(key); }
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for (String key : fromKeys) { ops++; toSet.contains(key); }
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return ops;
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}
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// ---------------------------------------------------------------
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// vscode-0004: config override identifiers — filter+includes O(N×M)
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// ---------------------------------------------------------------
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/** BEFORE: overrideIdentifiers.filter + includes — O(N²) */
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static int configOverrideBefore(List<String> fromIds, List<String> toIds) {
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int ops = 0;
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// addedOverrideIdentifiers = toIds.filter(key => !fromIds.includes(key))
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for (String key : toIds) {
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for (String fk : fromIds) { ops++; if (fk.equals(key)) break; }
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}
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// removedOverrideIdentifiers = fromIds.filter(key => !toIds.includes(key))
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for (String key : fromIds) {
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for (String tk : toIds) { ops++; if (tk.equals(key)) break; }
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}
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// inner loop: toOverrideIdentifiers.includes(identifier)
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for (String id : fromIds) {
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for (String tk : toIds) { ops++; if (tk.equals(id)) break; }
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}
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return ops;
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}
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/** AFTER: Set lookups — O(N+M) */
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static int configOverrideAfter(List<String> fromIds, List<String> toIds) {
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int ops = 0;
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Set<String> fromSet = new HashSet<>(fromIds);
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ops += fromIds.size();
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Set<String> toSet = new HashSet<>(toIds);
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ops += toIds.size();
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for (String key : toIds) { ops++; fromSet.contains(key); }
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for (String key : fromIds) { ops++; toSet.contains(key); }
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for (String id : fromIds) { ops++; toSet.contains(id); }
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return ops;
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}
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// ---------------------------------------------------------------
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// Main: run all tests
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// ---------------------------------------------------------------
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public static void main(String[] args) {
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int pass = 0, fail = 0;
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// --- vscode-0001: gallery uuid ---
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{
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int N = 200;
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List<String> extUuids = new ArrayList<>();
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List<String> resultUuids = new ArrayList<>();
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for (int i = 0; i < N; i++) {
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extUuids.add("ext-" + i);
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resultUuids.add("res-" + i); // disjoint = worst case
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}
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int before = galleryUuidBefore(extUuids, resultUuids);
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int after = galleryUuidAfter(extUuids, resultUuids);
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double ratio = (double) before / after;
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boolean ok = ratio > 10;
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System.out.printf("vscode-0001 gallery-uuid N=%d before=%d after=%d ratio=%.1fx %s%n",
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N, before, after, ratio, ok ? "PASS" : "FAIL");
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if (ok) pass++; else fail++;
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}
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// --- vscode-0002: deps scan ---
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{
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int D = 100;
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List<String> deps = new ArrayList<>();
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for (int i = 0; i < D; i++) deps.add("dep-" + i);
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int before = depsScanBefore(deps);
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int after = depsScanAfter(deps);
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double ratio = (double) before / after;
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boolean ok = ratio > 10;
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System.out.printf("vscode-0002 deps-scan D=%d before=%d after=%d ratio=%.1fx %s%n",
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D, before, after, ratio, ok ? "PASS" : "FAIL");
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if (ok) pass++; else fail++;
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}
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// --- vscode-0003: sync merge compare ---
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{
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int N = 500;
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List<String> fromKeys = new ArrayList<>();
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List<String> toKeys = new ArrayList<>();
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for (int i = 0; i < N; i++) {
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fromKeys.add("setting-" + i);
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toKeys.add("setting-" + (i + N)); // disjoint = worst case
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}
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int before = mergeCompareBefore(fromKeys, toKeys);
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int after = mergeCompareAfter(fromKeys, toKeys);
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double ratio = (double) before / after;
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boolean ok = ratio > 50;
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System.out.printf("vscode-0003 sync-merge-compare N=%d before=%d after=%d ratio=%.1fx %s%n",
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N, before, after, ratio, ok ? "PASS" : "FAIL");
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if (ok) pass++; else fail++;
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}
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// --- vscode-0004: config override identifiers ---
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{
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int N = 30;
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List<String> fromIds = new ArrayList<>();
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List<String> toIds = new ArrayList<>();
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for (int i = 0; i < N; i++) {
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fromIds.add("[lang-" + i + "]");
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toIds.add("[lang-" + (i + N) + "]"); // disjoint
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}
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int before = configOverrideBefore(fromIds, toIds);
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int after = configOverrideAfter(fromIds, toIds);
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double ratio = (double) before / after;
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boolean ok = ratio > 5;
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System.out.printf("vscode-0004 config-overrides N=%d before=%d after=%d ratio=%.1fx %s%n",
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N, before, after, ratio, ok ? "PASS" : "FAIL");
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if (ok) pass++; else fail++;
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}
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System.out.printf("%n%d/%d PASS%n", pass, pass + fail);
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||||
if (fail > 0) System.exit(1);
|
||||
}
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue