{"api_version":"1","generated_at":"2026-08-16T05:54:47+00:00","cve":"CVE-2026-74566","urls":{"html":"https://cve.report/CVE-2026-74566","api":"https://cve.report/api/cve/CVE-2026-74566.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-74566","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-74566"},"summary":{"title":"keys: make keyring key-chunk byte order agree with keyring_diff_objects()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nkeys: make keyring key-chunk byte order agree with keyring_diff_objects()\n\nkeyring_get_key_chunk() loads description bytes into the index chunk low\naddress first, while keyring_diff_objects() numbers the first differing\nbit from the low end and folds the absolute byte index into the level\nwithout removing the inline-prefix offset the level already carries.\nThe two disagree on byte order and bit position, so the array can be\ntold two keys first differ at a bit that does not differ in the chunk\nthe walker uses, letting crafted descriptions collide into one node.\n\nLoad the chunk in the order keyring_diff_objects() assumes and drop the\ninline-prefix length when folding the byte index into the level.  This\nonly changes the in-memory ordering used to place keys within a keyring;\nadd, search and read of non-colliding keys are unaffected.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-08-15 13:18:02","updated_at":"2026-08-15 13:18:02"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/58565eef0f8d861aae92abfb7658458d661cee17","name":"https://git.kernel.org/stable/c/58565eef0f8d861aae92abfb7658458d661cee17","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/7269df3e7fcfa308e6a456305162f7788747bdbd","name":"https://git.kernel.org/stable/c/7269df3e7fcfa308e6a456305162f7788747bdbd","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/7e5397a3fed0dee7779bd084bec3c0584db3c930","name":"https://git.kernel.org/stable/c/7e5397a3fed0dee7779bd084bec3c0584db3c930","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/3d9f16c0b643ceac305526b2e2fe25c2c6166926","name":"https://git.kernel.org/stable/c/3d9f16c0b643ceac305526b2e2fe25c2c6166926","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/bd0f976ef89dce6db458bf75bc2cf51127becc41","name":"https://git.kernel.org/stable/c/bd0f976ef89dce6db458bf75bc2cf51127becc41","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-74566","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-74566","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f771fde82051976a6fc0fd570f8b86de4a92124b bd0f976ef89dce6db458bf75bc2cf51127becc41 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f771fde82051976a6fc0fd570f8b86de4a92124b 7269df3e7fcfa308e6a456305162f7788747bdbd git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f771fde82051976a6fc0fd570f8b86de4a92124b 3d9f16c0b643ceac305526b2e2fe25c2c6166926 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f771fde82051976a6fc0fd570f8b86de4a92124b 7e5397a3fed0dee7779bd084bec3c0584db3c930 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f771fde82051976a6fc0fd570f8b86de4a92124b 58565eef0f8d861aae92abfb7658458d661cee17 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.3","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.3 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.151 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.103 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.44 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.8 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2-rc6 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["security/keys/keyring.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"bd0f976ef89dce6db458bf75bc2cf51127becc41","status":"affected","version":"f771fde82051976a6fc0fd570f8b86de4a92124b","versionType":"git"},{"lessThan":"7269df3e7fcfa308e6a456305162f7788747bdbd","status":"affected","version":"f771fde82051976a6fc0fd570f8b86de4a92124b","versionType":"git"},{"lessThan":"3d9f16c0b643ceac305526b2e2fe25c2c6166926","status":"affected","version":"f771fde82051976a6fc0fd570f8b86de4a92124b","versionType":"git"},{"lessThan":"7e5397a3fed0dee7779bd084bec3c0584db3c930","status":"affected","version":"f771fde82051976a6fc0fd570f8b86de4a92124b","versionType":"git"},{"lessThan":"58565eef0f8d861aae92abfb7658458d661cee17","status":"affected","version":"f771fde82051976a6fc0fd570f8b86de4a92124b","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["security/keys/keyring.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.3"},{"lessThan":"5.3","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.151","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.103","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.44","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.8","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2-rc6","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.151","versionStartIncluding":"5.3","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.103","versionStartIncluding":"5.3","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.44","versionStartIncluding":"5.3","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.8","versionStartIncluding":"5.3","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2-rc6","versionStartIncluding":"5.3","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nkeys: make keyring key-chunk byte order agree with keyring_diff_objects()\n\nkeyring_get_key_chunk() loads description bytes into the index chunk low\naddress first, while keyring_diff_objects() numbers the first differing\nbit from the low end and folds the absolute byte index into the level\nwithout removing the inline-prefix offset the level already carries.\nThe two disagree on byte order and bit position, so the array can be\ntold two keys first differ at a bit that does not differ in the chunk\nthe walker uses, letting crafted descriptions collide into one node.\n\nLoad the chunk in the order keyring_diff_objects() assumes and drop the\ninline-prefix length when folding the byte index into the level.  This\nonly changes the in-memory ordering used to place keys within a keyring;\nadd, search and read of non-colliding keys are unaffected."}],"providerMetadata":{"dateUpdated":"2026-08-15T12:28:07.628Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/bd0f976ef89dce6db458bf75bc2cf51127becc41"},{"url":"https://git.kernel.org/stable/c/7269df3e7fcfa308e6a456305162f7788747bdbd"},{"url":"https://git.kernel.org/stable/c/3d9f16c0b643ceac305526b2e2fe25c2c6166926"},{"url":"https://git.kernel.org/stable/c/7e5397a3fed0dee7779bd084bec3c0584db3c930"},{"url":"https://git.kernel.org/stable/c/58565eef0f8d861aae92abfb7658458d661cee17"}],"title":"keys: make keyring key-chunk byte order agree with keyring_diff_objects()","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-74566","datePublished":"2026-08-15T12:28:07.628Z","dateReserved":"2026-08-15T05:44:03.917Z","dateUpdated":"2026-08-15T12:28:07.628Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-15 13:18:02","lastModifiedDate":"2026-08-15 13:18:02","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"74566","Ordinal":"1","Title":"keys: make keyring key-chunk byte order agree with keyring_diff_","CVE":"CVE-2026-74566","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"74566","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nkeys: make keyring key-chunk byte order agree with keyring_diff_objects()\n\nkeyring_get_key_chunk() loads description bytes into the index chunk low\naddress first, while keyring_diff_objects() numbers the first differing\nbit from the low end and folds the absolute byte index into the level\nwithout removing the inline-prefix offset the level already carries.\nThe two disagree on byte order and bit position, so the array can be\ntold two keys first differ at a bit that does not differ in the chunk\nthe walker uses, letting crafted descriptions collide into one node.\n\nLoad the chunk in the order keyring_diff_objects() assumes and drop the\ninline-prefix length when folding the byte index into the level.  This\nonly changes the in-memory ordering used to place keys within a keyring;\nadd, search and read of non-colliding keys are unaffected.","Type":"Description","Title":"keys: make keyring key-chunk byte order agree with keyring_diff_"}]}}}