{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2021-47316","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2024-05-21T14:28:16.973Z","datePublished":"2024-05-21T14:35:32.564Z","dateUpdated":"2025-05-04T07:08:32.797Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2025-05-04T07:08:32.797Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnfsd: fix NULL dereference in nfs3svc_encode_getaclres\n\nIn error cases the dentry may be NULL.\n\nBefore 20798dfe249a, the encoder also checked dentry and\nd_really_is_positive(dentry), but that looks like overkill to me--zero\nstatus should be enough to guarantee a positive dentry.\n\nThis isn't the first time we've seen an error-case NULL dereference\nhidden in the initialization of a local variable in an xdr encoder.  But\nI went back through the other recent rewrites and didn't spot any\nsimilar bugs."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/nfsd/nfs3acl.c"],"versions":[{"version":"d505e66191072748620fc0af038cea4e4da0e3cd","lessThan":"e79057d15d96ef19de4de6d7e479bae3d58a2a8d","status":"affected","versionType":"git"},{"version":"20798dfe249a01ad1b12eec7dbc572db5003244a","lessThan":"650e6f383a6eb40f7c0a010982a74ab4b6893870","status":"affected","versionType":"git"},{"version":"20798dfe249a01ad1b12eec7dbc572db5003244a","lessThan":"ab1016d39cc052064e32f25ad18ef8767a0ee3b8","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/nfsd/nfs3acl.c"],"versions":[{"version":"5.13","status":"affected"},{"version":"0","lessThan":"5.13","status":"unaffected","versionType":"semver"},{"version":"5.13.4","lessThanOrEqual":"5.13.*","status":"unaffected","versionType":"semver"},{"version":"5.14","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":"5.13","versionEndExcluding":"5.13.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.13","versionEndExcluding":"5.14"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/e79057d15d96ef19de4de6d7e479bae3d58a2a8d"},{"url":"https://git.kernel.org/stable/c/650e6f383a6eb40f7c0a010982a74ab4b6893870"},{"url":"https://git.kernel.org/stable/c/ab1016d39cc052064e32f25ad18ef8767a0ee3b8"}],"title":"nfsd: fix NULL dereference in nfs3svc_encode_getaclres","x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2021-47316","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2024-05-21T18:45:04.809482Z"}}}],"providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2024-06-04T17:13:36.645Z"}},{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-04T05:32:08.599Z"},"title":"CVE Program Container","references":[{"url":"https://git.kernel.org/stable/c/e79057d15d96ef19de4de6d7e479bae3d58a2a8d","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/650e6f383a6eb40f7c0a010982a74ab4b6893870","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/ab1016d39cc052064e32f25ad18ef8767a0ee3b8","tags":["x_transferred"]}]}]}}