{"id":"CVE-2023-53867","revision":null,"records":[{"revision":"abc1e94dd161442584940710793a2feb","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2023-53867","aliases":[],"title":"ceph: fix potential use-after-free bug when trimming caps","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nceph: fix potential use-after-free bug when trimming caps\n\nWhen trimming the caps and just after the 'session->s_cap_lock' is\nreleased in ceph_iterate_session_caps() the cap maybe removed by\nanother thread, and when using the stale cap memory in the callbacks\nit will trigger use-after-free crash.\n\nWe need to check the existence of the cap just after the 'ci->i_ceph_lock'\nbeing acquired. And do nothing if it's already removed.","state":0,"publishedAt":"2025-12-24T10:55:25.43+00:00","modifiedAt":"2026-10-15T21:41:37.567+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"fs/ceph/caps.c\",\n                        \"fs/ceph/debugfs.c\",\n                        \"fs/ceph/mds_client.c\",\n                        \"fs/ceph/mds_client.h\",\n                        \"fs/ceph/super.h\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"2f2dc053404febedc9c273452d9d518fb31fde72\",\n                            \"lessThan\": \"2b2515b8095cf2149bef44383a99d5b5677f1831\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"2f2dc053404febedc9c273452d9d518fb31fde72\",\n                            \"lessThan\": \"448875a73e16ba7d81dec9274ce9d33a12d092fb\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"2f2dc053404febedc9c273452d9d518fb31fde72\",\n                            \"lessThan\": \"ae6e935618d99cdba11eab4714092e7e5f13cf7e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"2f2dc053404febedc9c273452d9d518fb31fde72\",\n                            \"lessThan\": \"aaf67de78807c59c35bafb5003d4fb457c764800\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"fs/ceph/caps.c\",\n                        \"fs/ceph/debugfs.c\",\n                        \"fs/ceph/mds_client.c\",\n                        \"fs/ceph/mds_client.h\",\n                        \"fs/ceph/super.h\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"2.6.34\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"2.6.34\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.28\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.2.15\",\n                            \"lessThanOrEqual\": \"6.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.3.2\",\n                            \"lessThanOrEqual\": \"6.3.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.4\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8,"severity":"CRITICAL"}],"references":["https://git.kernel.org/stable/c/2b2515b8095cf2149bef44383a99d5b5677f1831","https://git.kernel.org/stable/c/448875a73e16ba7d81dec9274ce9d33a12d092fb","https://git.kernel.org/stable/c/ae6e935618d99cdba11eab4714092e7e5f13cf7e","https://git.kernel.org/stable/c/aaf67de78807c59c35bafb5003d4fb457c764800"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2023-53867","license":"CVE Program Terms of Use","key":"cve-program:CVE-2023-53867","identifiers":["CVE-2023-53867"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. Missing entries do not establish absence of exploitation.","generation":"2026-11-09T13:04:36.1502744+00:00","complete":true,"records":1769,"lastAttemptAt":"2026-11-09T13:04:36.1502744+00:00","lastSuccessAt":"2026-11-09T13:04:36.3089681+00:00","error":null,"lastVerifiedAt":"2026-11-09T13:04:36.3089715+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"cve-program","scope":"Official CVE Program baseline and cumulative hourly delta; all vendors, published and rejected records","generation":"cve-24e6fde7b744113daefb8f6135035fb8a5c69c9617c9c0d40574a0376532ffd3-bce548cb9713389d6cc2da20d64478978e569c118d9e3817d5449036d2c96da4","complete":true,"records":421424,"lastAttemptAt":"2026-11-09T13:02:24.4919458+00:00","lastSuccessAt":"2026-11-09T13:02:24.4462956+00:00","error":null,"lastVerifiedAt":"2026-11-09T13:02:24.4919458+00:00","snapshotPublishedAt":"2026-11-09T12:31:22+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"euvd","scope":"Rolling EUVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global EUVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-897f1f8852214f7d97a85b009edb7d92","complete":false,"records":13655,"lastAttemptAt":"2026-11-09T13:16:47.5163098+00:00","lastSuccessAt":"2026-11-09T13:16:47.505+00:00","error":"7 identifier lookups failed; latest failures include HTTP 403. Other identifiers were checked independently.","lastVerifiedAt":"2026-11-09T13:16:47.505+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13700,"expectedIdentifiers":13707,"failedIdentifiers":7},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. Not a global EPSS backfill.","generation":"2026-11-09T13:04:36.1502744+00:00","complete":true,"records":1096,"lastAttemptAt":"2026-11-09T13:04:36.1502744+00:00","lastSuccessAt":"2026-11-09T13:04:36.3096956+00:00","error":null,"lastVerifiedAt":"2026-11-09T13:04:36.3096959+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"nvd","scope":"Rolling NVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global NVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. 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