{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-53397", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-06-09T07:44:35.402Z", "datePublished": "2026-07-19T12:01:58.938Z", "dateUpdated": "2026-07-19T12:01:58.938Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-07-19T12:01:58.938Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfsd: fix posix_acl leak on SETACL decode failure\n\nnfsaclsvc_decode_setaclargs() and nfs3svc_decode_setaclargs() each\ncall nfs_stream_decode_acl() twice, first for NFS_ACL and then for\nNFS_DFACL. Each successful call transfers ownership of a freshly\nallocated posix_acl into argp->acl_access or argp->acl_default. If\nthe first call succeeds but the second fails, the decoder returns\nfalse and argp->acl_access is left dangling.\n\nACLPROC2_SETACL.pc_release was wired to nfssvc_release_attrstat and\nACLPROC3_SETACL.pc_release was wired to nfs3svc_release_fhandle.\nBoth only call fh_put() and have no knowledge of the ACL fields on\nargp. The posix_acl_release() pairs sat at the out: labels inside\nnfsacld_proc_setacl() and nfsd3_proc_setacl(), but svc_process()\nskips pc_func when pc_decode returns false, so that cleanup is\nunreachable on decode failure:\n\n svc_process_common()\n pc_decode() /* decode_setaclargs: false */\n /* pc_func skipped */\n pc_release() /* fh_put only -- ACLs leaked */\n\nThe orphaned posix_acl is leaked for the lifetime of the server.\n\nFix by adding nfsaclsvc_release_setacl() and nfs3svc_release_setacl(),\nwhich release both argp->acl_access and argp->acl_default in addition\nto fh_put(), and wiring them as pc_release for their respective SETACL\nprocedures. pc_release runs on every path svc_process() takes after\ndecode, including decode failure, so the posix_acl_release() pairs are\nremoved from the proc functions' out: labels to keep ownership in one\nplace. This matches the existing release_getacl() pattern used by\nthe sibling GETACL procedures."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/nfsd/nfs2acl.c", "fs/nfsd/nfs3acl.c"], "versions": [{"version": "a257cdd0e2179630d3201c32ba14d7fcb3c3a055", "lessThan": "b2eb1ffd511d1b3c3e21122f97cbbccea411e277", "status": "affected", "versionType": "git"}, {"version": "a257cdd0e2179630d3201c32ba14d7fcb3c3a055", "lessThan": "b94c4be77682aab06d65ca7296149e3bcfb37353", "status": "affected", "versionType": "git"}, {"version": "a257cdd0e2179630d3201c32ba14d7fcb3c3a055", "lessThan": "887f92ceccf3eacd5f2402db21254d66372fae00", "status": "affected", "versionType": "git"}, {"version": "a257cdd0e2179630d3201c32ba14d7fcb3c3a055", "lessThan": "1e96239fddcefacf6afe6c498357be68eacbcabc", "status": "affected", "versionType": "git"}, {"version": "a257cdd0e2179630d3201c32ba14d7fcb3c3a055", "lessThan": "bd69a825485168ef74e815ecb286754b570fdcc7", "status": "affected", "versionType": "git"}, {"version": "a257cdd0e2179630d3201c32ba14d7fcb3c3a055", "lessThan": "136b416593f1349cf6f72c8e3d18f0f204ee8545", "status": "affected", "versionType": "git"}, {"version": "a257cdd0e2179630d3201c32ba14d7fcb3c3a055", "lessThan": "a5b42c1e4ff2befaa6b96f7cbf32174751eba083", "status": "affected", "versionType": "git"}, {"version": "a257cdd0e2179630d3201c32ba14d7fcb3c3a055", "lessThan": "0853ac544c590880d797b04daa33fcb72b6be0e1", "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/nfs2acl.c", "fs/nfsd/nfs3acl.c"], "versions": [{"version": "2.6.13", "status": "affected"}, {"version": "0", "lessThan": "2.6.13", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.260", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.211", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.177", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.144", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.95", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.38", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.3", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2-rc1", "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": "2.6.13", "versionEndExcluding": "5.10.260"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.13", "versionEndExcluding": "5.15.211"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.13", "versionEndExcluding": "6.1.177"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.13", "versionEndExcluding": "6.6.144"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.13", "versionEndExcluding": "6.12.95"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.13", "versionEndExcluding": "6.18.38"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.13", "versionEndExcluding": "7.1.3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.13", "versionEndExcluding": "7.2-rc1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/b2eb1ffd511d1b3c3e21122f97cbbccea411e277"}, {"url": "https://git.kernel.org/stable/c/b94c4be77682aab06d65ca7296149e3bcfb37353"}, {"url": "https://git.kernel.org/stable/c/887f92ceccf3eacd5f2402db21254d66372fae00"}, {"url": "https://git.kernel.org/stable/c/1e96239fddcefacf6afe6c498357be68eacbcabc"}, {"url": "https://git.kernel.org/stable/c/bd69a825485168ef74e815ecb286754b570fdcc7"}, {"url": "https://git.kernel.org/stable/c/136b416593f1349cf6f72c8e3d18f0f204ee8545"}, {"url": "https://git.kernel.org/stable/c/a5b42c1e4ff2befaa6b96f7cbf32174751eba083"}, {"url": "https://git.kernel.org/stable/c/0853ac544c590880d797b04daa33fcb72b6be0e1"}], "title": "nfsd: fix posix_acl leak on SETACL decode failure", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{}

{}