{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-21669","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2024-12-29T08:45:45.735Z","datePublished":"2025-01-31T11:25:33.185Z","dateUpdated":"2025-11-03T20:58:50.209Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2025-05-04T07:18:42.103Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nvsock/virtio: discard packets if the transport changes\n\nIf the socket has been de-assigned or assigned to another transport,\nwe must discard any packets received because they are not expected\nand would cause issues when we access vsk->transport.\n\nA possible scenario is described by Hyunwoo Kim in the attached link,\nwhere after a first connect() interrupted by a signal, and a second\nconnect() failed, we can find `vsk->transport` at NULL, leading to a\nNULL pointer dereference."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/vmw_vsock/virtio_transport_common.c"],"versions":[{"version":"c0cfa2d8a788fcf45df5bf4070ab2474c88d543a","lessThan":"18a7fc371d1dbf8deff16c2dd9292bcc73f43040","status":"affected","versionType":"git"},{"version":"c0cfa2d8a788fcf45df5bf4070ab2474c88d543a","lessThan":"6486915fa661584d70e8e7e4068c6c075c67dd6d","status":"affected","versionType":"git"},{"version":"c0cfa2d8a788fcf45df5bf4070ab2474c88d543a","lessThan":"88244163bc7e7b0ce9dd7bf4c8a563b41525c3ee","status":"affected","versionType":"git"},{"version":"c0cfa2d8a788fcf45df5bf4070ab2474c88d543a","lessThan":"d88b249e14bd0ee1e46bbe4f456e22e01b8c68de","status":"affected","versionType":"git"},{"version":"c0cfa2d8a788fcf45df5bf4070ab2474c88d543a","lessThan":"677579b641af109613564460a4e3bdcb16850b61","status":"affected","versionType":"git"},{"version":"c0cfa2d8a788fcf45df5bf4070ab2474c88d543a","lessThan":"2cb7c756f605ec02ffe562fb26828e4bcc5fdfc1","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/vmw_vsock/virtio_transport_common.c"],"versions":[{"version":"5.5","status":"affected"},{"version":"0","lessThan":"5.5","status":"unaffected","versionType":"semver"},{"version":"5.10.234","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.177","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.127","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.74","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.11","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.13","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":"5.5","versionEndExcluding":"5.10.234"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"5.15.177"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"6.1.127"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"6.6.74"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"6.12.11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"6.13"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/18a7fc371d1dbf8deff16c2dd9292bcc73f43040"},{"url":"https://git.kernel.org/stable/c/6486915fa661584d70e8e7e4068c6c075c67dd6d"},{"url":"https://git.kernel.org/stable/c/88244163bc7e7b0ce9dd7bf4c8a563b41525c3ee"},{"url":"https://git.kernel.org/stable/c/d88b249e14bd0ee1e46bbe4f456e22e01b8c68de"},{"url":"https://git.kernel.org/stable/c/677579b641af109613564460a4e3bdcb16850b61"},{"url":"https://git.kernel.org/stable/c/2cb7c756f605ec02ffe562fb26828e4bcc5fdfc1"}],"title":"vsock/virtio: discard packets if the transport changes","x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":5.5,"attackVector":"LOCAL","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"LOW","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"id":"CVE-2025-21669","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2025-10-01T19:52:17.860929Z"}}}],"problemTypes":[{"descriptions":[{"lang":"en","type":"CWE","cweId":"CWE-476","description":"CWE-476 NULL Pointer Dereference"}]}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2025-10-01T19:57:12.459Z"}},{"title":"CVE Program Container","references":[{"url":"https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"},{"url":"https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"}],"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2025-11-03T20:58:50.209Z"}}]}}