{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-71131","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-01-13T15:30:19.655Z","datePublished":"2026-01-14T15:07:47.194Z","dateUpdated":"2026-09-08T08:44:01.897Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-08-05T12:12:16.622Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: seqiv - Do not use req->iv after crypto_aead_encrypt\n\nAs soon as crypto_aead_encrypt is called, the underlying request\nmay be freed by an asynchronous completion.  Thus dereferencing\nreq->iv after it returns is invalid.\n\nInstead of checking req->iv against info, create a new variable\nunaligned_info and use it for that purpose instead."}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","baseScore":7.5,"baseSeverity":"HIGH"},"scenarios":[{"lang":"en","value":"AV:N - A remote peer can trigger outbound ESP encryption by sending TCP traffic that induces protected ACKs or replies through an existing XFRM policy.\nAC:L - With an asynchronous accelerator present, repeated traffic creates the submission/completion race without requiring precise heap layout or victim action.\nPR:N - In an already-configured IPsec gateway or service deployment, the attacker only needs to send traffic that elicits protected output and does not need local capabilities.\nUI:N - No victim user action is required because packet processing and asynchronous completion occur automatically.\nS:U - The vulnerable crypto operation and resulting kernel impact remain within the host kernel's security authority.\nC:N - The freed req->iv value is only loaded for a pointer comparison and is never exposed. For asynchronous return values, the cleanup helper returns before any further dereference.\nI:N - The stale value cannot drive a store, arbitrary free, or control-flow target, so the vulnerable path provides no modification primitive.\nA:H - The flaw produced an observed slab-use-after-free crash in seqiv_aead_encrypt, which can cause a fatal KASAN report, oops, or kernel panic."}]}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["crypto/seqiv.c"],"versions":[{"version":"0a270321dbf948963aeb0e8382fe17d2c2eb3771","lessThan":"18202537856e0fae079fed2c9308780bcff2bb9d","status":"affected","versionType":"git"},{"version":"0a270321dbf948963aeb0e8382fe17d2c2eb3771","lessThan":"baf0e2d1e03ddb04781dfe7f22a654d3611f69b2","status":"affected","versionType":"git"},{"version":"0a270321dbf948963aeb0e8382fe17d2c2eb3771","lessThan":"50f196d2bbaee4ab2494bb1b0d294deba292951a","status":"affected","versionType":"git"},{"version":"0a270321dbf948963aeb0e8382fe17d2c2eb3771","lessThan":"0279978adec6f1296af66b642cce641c6580be46","status":"affected","versionType":"git"},{"version":"0a270321dbf948963aeb0e8382fe17d2c2eb3771","lessThan":"ccbb96434d88e32358894c879457b33f7508e798","status":"affected","versionType":"git"},{"version":"0a270321dbf948963aeb0e8382fe17d2c2eb3771","lessThan":"5476f7f8a311236604b78fcc5b2a63b3a61b0169","status":"affected","versionType":"git"},{"version":"0a270321dbf948963aeb0e8382fe17d2c2eb3771","lessThan":"50fdb78b7c0bcc550910ef69c0984e751cac72fa","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["crypto/seqiv.c"],"versions":[{"version":"2.6.25","status":"affected"},{"version":"0","lessThan":"2.6.25","status":"unaffected","versionType":"semver"},{"version":"5.10.248","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.198","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.160","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.120","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.64","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.4","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"6.19","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.25","versionEndExcluding":"5.10.248"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.25","versionEndExcluding":"5.15.198"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.25","versionEndExcluding":"6.1.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.25","versionEndExcluding":"6.6.120"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.25","versionEndExcluding":"6.12.64"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.25","versionEndExcluding":"6.18.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.25","versionEndExcluding":"6.19"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/18202537856e0fae079fed2c9308780bcff2bb9d"},{"url":"https://git.kernel.org/stable/c/baf0e2d1e03ddb04781dfe7f22a654d3611f69b2"},{"url":"https://git.kernel.org/stable/c/50f196d2bbaee4ab2494bb1b0d294deba292951a"},{"url":"https://git.kernel.org/stable/c/0279978adec6f1296af66b642cce641c6580be46"},{"url":"https://git.kernel.org/stable/c/ccbb96434d88e32358894c879457b33f7508e798"},{"url":"https://git.kernel.org/stable/c/5476f7f8a311236604b78fcc5b2a63b3a61b0169"},{"url":"https://git.kernel.org/stable/c/50fdb78b7c0bcc550910ef69c0984e751cac72fa"}],"title":"crypto: seqiv - 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