{"id":"CVE-2025-71131","state":"PUBLISHED","title":"crypto: seqiv - Do not use req->iv after crypto_aead_encrypt","description":"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.","publishedAt":"2026-01-14T15:07:47.194Z","updatedAt":"2026-10-19T18:15:15.635Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","source":"Linux"},"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"0a270321dbf948963aeb0e8382fe17d2c2eb3771","status":"affected","lessThan":"18202537856e0fae079fed2c9308780bcff2bb9d","versionType":"git"},{"version":"0a270321dbf948963aeb0e8382fe17d2c2eb3771","status":"affected","lessThan":"baf0e2d1e03ddb04781dfe7f22a654d3611f69b2","versionType":"git"},{"version":"0a270321dbf948963aeb0e8382fe17d2c2eb3771","status":"affected","lessThan":"50f196d2bbaee4ab2494bb1b0d294deba292951a","versionType":"git"},{"version":"0a270321dbf948963aeb0e8382fe17d2c2eb3771","status":"affected","lessThan":"0279978adec6f1296af66b642cce641c6580be46","versionType":"git"},{"version":"0a270321dbf948963aeb0e8382fe17d2c2eb3771","status":"affected","lessThan":"ccbb96434d88e32358894c879457b33f7508e798","versionType":"git"},{"version":"0a270321dbf948963aeb0e8382fe17d2c2eb3771","status":"affected","lessThan":"5476f7f8a311236604b78fcc5b2a63b3a61b0169","versionType":"git"},{"version":"0a270321dbf948963aeb0e8382fe17d2c2eb3771","status":"affected","lessThan":"50fdb78b7c0bcc550910ef69c0984e751cac72fa","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["crypto/seqiv.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.25","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.25","versionType":"semver"},{"version":"5.10.248","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.198","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.160","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.120","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.64","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.4","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["crypto/seqiv.c"]}],"references":["https://git.kernel.org/stable/c/18202537856e0fae079fed2c9308780bcff2bb9d","https://git.kernel.org/stable/c/baf0e2d1e03ddb04781dfe7f22a654d3611f69b2","https://git.kernel.org/stable/c/50f196d2bbaee4ab2494bb1b0d294deba292951a","https://git.kernel.org/stable/c/0279978adec6f1296af66b642cce641c6580be46","https://git.kernel.org/stable/c/ccbb96434d88e32358894c879457b33f7508e798","https://git.kernel.org/stable/c/5476f7f8a311236604b78fcc5b2a63b3a61b0169","https://git.kernel.org/stable/c/50fdb78b7c0bcc550910ef69c0984e751cac72fa","https://cert-portal.siemens.com/productcert/html/ssa-019113.html","https://cert-portal.siemens.com/productcert/html/ssa-457936.html"],"weaknesses":["CWE-416"],"ingestedAt":"2026-10-29T20:10:04.440Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/71xxx/CVE-2025-71131.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-71131","state":"PUBLISHED","datePublished":"2026-01-14T15:07:47.194Z","dateUpdated":"2026-10-19T18:15:15.635Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-01-13T15:30:19.655Z"},"containers":{"cna":{"title":"crypto: seqiv - Do not use req->iv after crypto_aead_encrypt","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."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"0a270321dbf948963aeb0e8382fe17d2c2eb3771","status":"affected","lessThan":"18202537856e0fae079fed2c9308780bcff2bb9d","versionType":"git"},{"version":"0a270321dbf948963aeb0e8382fe17d2c2eb3771","status":"affected","lessThan":"baf0e2d1e03ddb04781dfe7f22a654d3611f69b2","versionType":"git"},{"version":"0a270321dbf948963aeb0e8382fe17d2c2eb3771","status":"affected","lessThan":"50f196d2bbaee4ab2494bb1b0d294deba292951a","versionType":"git"},{"version":"0a270321dbf948963aeb0e8382fe17d2c2eb3771","status":"affected","lessThan":"0279978adec6f1296af66b642cce641c6580be46","versionType":"git"},{"version":"0a270321dbf948963aeb0e8382fe17d2c2eb3771","status":"affected","lessThan":"ccbb96434d88e32358894c879457b33f7508e798","versionType":"git"},{"version":"0a270321dbf948963aeb0e8382fe17d2c2eb3771","status":"affected","lessThan":"5476f7f8a311236604b78fcc5b2a63b3a61b0169","versionType":"git"},{"version":"0a270321dbf948963aeb0e8382fe17d2c2eb3771","status":"affected","lessThan":"50fdb78b7c0bcc550910ef69c0984e751cac72fa","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["crypto/seqiv.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.25","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.25","versionType":"semver"},{"version":"5.10.248","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.198","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.160","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.120","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.64","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.4","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["crypto/seqiv.c"]}],"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"}],"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."}]}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-08-05T12:12:16.622Z"},"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"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2025-71131","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-06-10T20:40:45.516602Z"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-416","lang":"en","type":"CWE","description":"CWE-416 Use After Free"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-19T18:15:15.635Z"}},{"affected":[{"vendor":"Siemens","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP","defaultStatus":"unknown","versions":[{"version":"V3.1.6","status":"affected","lessThan":"*","versionType":"custom"}]},{"vendor":"Siemens","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP","defaultStatus":"unknown","versions":[{"version":"V3.1.7","status":"affected","lessThan":"*","versionType":"custom"}]},{"vendor":"Siemens","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP","defaultStatus":"unknown","versions":[{"version":"V3.1.6","status":"affected","lessThan":"*","versionType":"custom"}]},{"vendor":"Siemens","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP","defaultStatus":"unknown","versions":[{"version":"V3.1.7","status":"affected","lessThan":"*","versionType":"custom"}]},{"vendor":"Siemens","product":"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP","defaultStatus":"unknown","versions":[{"version":"V3.1.6","status":"affected","lessThan":"*","versionType":"custom"}]},{"vendor":"Siemens","product":"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP","defaultStatus":"unknown","versions":[{"version":"V3.1.7","status":"affected","lessThan":"*","versionType":"custom"}]},{"vendor":"Siemens","product":"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP","defaultStatus":"unknown","versions":[{"version":"V3.1.6","status":"affected","lessThan":"*","versionType":"custom"}]},{"vendor":"Siemens","product":"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP","defaultStatus":"unknown","versions":[{"version":"V3.1.7","status":"affected","lessThan":"*","versionType":"custom"}]},{"vendor":"Siemens","product":"SIPLUS S7-1500 CPU 1518-4 PN/DP MFP","defaultStatus":"unknown","versions":[{"version":"V3.1.6","status":"affected","lessThan":"*","versionType":"custom"}]},{"vendor":"Siemens","product":"SIPLUS S7-1500 CPU 1518-4 PN/DP MFP","defaultStatus":"unknown","versions":[{"version":"V3.1.7","status":"affected","lessThan":"*","versionType":"custom"}]}],"references":[{"url":"https://cert-portal.siemens.com/productcert/html/ssa-019113.html"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-457936.html"}],"providerMetadata":{"shortName":"siemens-SADP","orgId":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e","dateUpdated":"2026-10-15T01:10:57.510Z"},"x_adpType":"supplier"}]}}}