{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2021-46952","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2024-02-25T13:45:52.722Z","datePublished":"2024-02-27T18:40:35.343Z","dateUpdated":"2025-05-04T07:01:04.042Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2025-05-04T07:01:04.042Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nNFS: fs_context: validate UDP retrans to prevent shift out-of-bounds\n\nFix shift out-of-bounds in xprt_calc_majortimeo(). This is caused\nby a garbage timeout (retrans) mount option being passed to nfs mount,\nin this case from syzkaller.\n\nIf the protocol is XPRT_TRANSPORT_UDP, then 'retrans' is a shift\nvalue for a 64-bit long integer, so 'retrans' cannot be >= 64.\nIf it is >= 64, fail the mount and return an error."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/nfs/fs_context.c"],"versions":[{"version":"9954bf92c0cddd50a2a470be302e1c1ffdf21d42","lessThan":"96fa26b74cdcf9f5c98996bf36bec9fb5b19ffe2","status":"affected","versionType":"git"},{"version":"9954bf92c0cddd50a2a470be302e1c1ffdf21d42","lessThan":"2f3380121d49e829fb73ba86240c181bc32ad897","status":"affected","versionType":"git"},{"version":"9954bf92c0cddd50a2a470be302e1c1ffdf21d42","lessThan":"3d0163821c035040a46d816a42c0780f0f0a30a8","status":"affected","versionType":"git"},{"version":"9954bf92c0cddd50a2a470be302e1c1ffdf21d42","lessThan":"c09f11ef35955785f92369e25819bf0629df2e59","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/nfs/fs_context.c"],"versions":[{"version":"5.6","status":"affected"},{"version":"0","lessThan":"5.6","status":"unaffected","versionType":"semver"},{"version":"5.10.36","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.11.20","lessThanOrEqual":"5.11.*","status":"unaffected","versionType":"semver"},{"version":"5.12.3","lessThanOrEqual":"5.12.*","status":"unaffected","versionType":"semver"},{"version":"5.13","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":"5.6","versionEndExcluding":"5.10.36"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.6","versionEndExcluding":"5.11.20"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.6","versionEndExcluding":"5.12.3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.6","versionEndExcluding":"5.13"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/96fa26b74cdcf9f5c98996bf36bec9fb5b19ffe2"},{"url":"https://git.kernel.org/stable/c/2f3380121d49e829fb73ba86240c181bc32ad897"},{"url":"https://git.kernel.org/stable/c/3d0163821c035040a46d816a42c0780f0f0a30a8"},{"url":"https://git.kernel.org/stable/c/c09f11ef35955785f92369e25819bf0629df2e59"}],"title":"NFS: fs_context: validate UDP retrans to prevent shift out-of-bounds","x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2021-46952","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2024-02-27T20:13:18.077870Z"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2024-07-05T17:22:02.950Z"}},{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-04T05:17:43.053Z"},"title":"CVE Program Container","references":[{"url":"https://git.kernel.org/stable/c/96fa26b74cdcf9f5c98996bf36bec9fb5b19ffe2","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/2f3380121d49e829fb73ba86240c181bc32ad897","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/3d0163821c035040a46d816a42c0780f0f0a30a8","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/c09f11ef35955785f92369e25819bf0629df2e59","tags":["x_transferred"]}]}]}}