{"id":"CVE-2023-53867","revision":"abc1e94dd161442584940710793a2feb","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":[]}