{"api_version":"1","generated_at":"2026-09-12T15:02:49+00:00","cve":"CVE-2026-89608","urls":{"html":"https://cve.report/CVE-2026-89608","api":"https://cve.report/api/cve/CVE-2026-89608.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-89608","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-89608"},"summary":{"title":"ecryptfs: pass packet set buffer size to parser","description":"In the Linux kernel, the following vulnerability has been resolved:\n\necryptfs: pass packet set buffer size to parser\n\necryptfs_parse_packet_set() receives a pointer into the file header, but\nit calculates the remaining packet buffer size from PAGE_SIZE - 8.  For\nversion 1 headers the packet set starts later in the header, so this can\noverstate the available buffer.\n\nPass the actual packet set buffer length from the caller and calculate\nper-packet limits from the remaining bytes in that buffer.  Recompute the\nremaining length after consuming a tag 3 packet before parsing the\nfollowing tag 11 packet.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-11 20:19:45","updated_at":"2026-09-11 20:19:45"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/329de8b9e988b152b938f09224670d97bada0b96","name":"https://git.kernel.org/stable/c/329de8b9e988b152b938f09224670d97bada0b96","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/747fd45be396a6aea3420ab657a0ab4e60185b05","name":"https://git.kernel.org/stable/c/747fd45be396a6aea3420ab657a0ab4e60185b05","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/2602b79c5b3e2f6fce12e38a670f8e3fda4e46a2","name":"https://git.kernel.org/stable/c/2602b79c5b3e2f6fce12e38a670f8e3fda4e46a2","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/e5d254e654f2311a3c4b9c791d7f216554bcd17a","name":"https://git.kernel.org/stable/c/e5d254e654f2311a3c4b9c791d7f216554bcd17a","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-89608","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89608","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 237fead619984cc48818fe12ee0ceada3f55b012 329de8b9e988b152b938f09224670d97bada0b96 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 237fead619984cc48818fe12ee0ceada3f55b012 e5d254e654f2311a3c4b9c791d7f216554bcd17a git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 237fead619984cc48818fe12ee0ceada3f55b012 747fd45be396a6aea3420ab657a0ab4e60185b05 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 237fead619984cc48818fe12ee0ceada3f55b012 2602b79c5b3e2f6fce12e38a670f8e3fda4e46a2 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 2.6.19","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 2.6.19 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.109 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.50 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.4 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc1 * 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":["fs/ecryptfs/crypto.c","fs/ecryptfs/ecryptfs_kernel.h","fs/ecryptfs/keystore.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"329de8b9e988b152b938f09224670d97bada0b96","status":"affected","version":"237fead619984cc48818fe12ee0ceada3f55b012","versionType":"git"},{"lessThan":"e5d254e654f2311a3c4b9c791d7f216554bcd17a","status":"affected","version":"237fead619984cc48818fe12ee0ceada3f55b012","versionType":"git"},{"lessThan":"747fd45be396a6aea3420ab657a0ab4e60185b05","status":"affected","version":"237fead619984cc48818fe12ee0ceada3f55b012","versionType":"git"},{"lessThan":"2602b79c5b3e2f6fce12e38a670f8e3fda4e46a2","status":"affected","version":"237fead619984cc48818fe12ee0ceada3f55b012","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["fs/ecryptfs/crypto.c","fs/ecryptfs/ecryptfs_kernel.h","fs/ecryptfs/keystore.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"2.6.19"},{"lessThan":"2.6.19","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.109","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.50","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.109","versionStartIncluding":"2.6.19","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.50","versionStartIncluding":"2.6.19","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.4","versionStartIncluding":"2.6.19","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc1","versionStartIncluding":"2.6.19","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\necryptfs: pass packet set buffer size to parser\n\necryptfs_parse_packet_set() receives a pointer into the file header, but\nit calculates the remaining packet buffer size from PAGE_SIZE - 8.  For\nversion 1 headers the packet set starts later in the header, so this can\noverstate the available buffer.\n\nPass the actual packet set buffer length from the caller and calculate\nper-packet limits from the remaining bytes in that buffer.  Recompute the\nremaining length after consuming a tag 3 packet before parsing the\nfollowing tag 11 packet."}],"providerMetadata":{"dateUpdated":"2026-09-11T19:45:10.318Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/329de8b9e988b152b938f09224670d97bada0b96"},{"url":"https://git.kernel.org/stable/c/e5d254e654f2311a3c4b9c791d7f216554bcd17a"},{"url":"https://git.kernel.org/stable/c/747fd45be396a6aea3420ab657a0ab4e60185b05"},{"url":"https://git.kernel.org/stable/c/2602b79c5b3e2f6fce12e38a670f8e3fda4e46a2"}],"title":"ecryptfs: pass packet set buffer size to parser","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-89608","datePublished":"2026-09-11T19:45:10.318Z","dateReserved":"2026-09-11T19:38:34.733Z","dateUpdated":"2026-09-11T19:45:10.318Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-11 20:19:45","lastModifiedDate":"2026-09-11 20:19:45","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"89608","Ordinal":"1","Title":"ecryptfs: pass packet set buffer size to parser","CVE":"CVE-2026-89608","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"89608","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\necryptfs: pass packet set buffer size to parser\n\necryptfs_parse_packet_set() receives a pointer into the file header, but\nit calculates the remaining packet buffer size from PAGE_SIZE - 8.  For\nversion 1 headers the packet set starts later in the header, so this can\noverstate the available buffer.\n\nPass the actual packet set buffer length from the caller and calculate\nper-packet limits from the remaining bytes in that buffer.  Recompute the\nremaining length after consuming a tag 3 packet before parsing the\nfollowing tag 11 packet.","Type":"Description","Title":"ecryptfs: pass packet set buffer size to parser"}]}}}