{"id":"CVE-2025-39902","revision":"3e0564350fe646c5b89fe39a512f3d92","records":[{"revision":"3e0564350fe646c5b89fe39a512f3d92","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2025-39902","aliases":[],"title":"mm/slub: avoid accessing metadata when pointer is invalid in object_err()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmm/slub: avoid accessing metadata when pointer is invalid in object_err()\n\nobject_err() reports details of an object for further debugging, such as\nthe freelist pointer, redzone, etc. However, if the pointer is invalid,\nattempting to access object metadata can lead to a crash since it does\nnot point to a valid object.\n\nOne known path to the crash is when alloc_consistency_checks()\ndetermines the pointer to the allocated object is invalid because of a\nfreelist corruption, and calls object_err() to report it. The debug code\nshould report and handle the corruption gracefully and not crash in the\nprocess.\n\nIn case the pointer is NULL or check_valid_pointer() returns false for\nthe pointer, only print the pointer value and skip accessing metadata.","state":0,"publishedAt":"2025-10-01T07:42:49.415+00:00","modifiedAt":"2026-10-15T22:02:32.999+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                        \"mm/slub.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"81819f0fc8285a2a5a921c019e3e3d7b6169d225\",\n                            \"lessThan\": \"872f2c34ff232af1e65ad2df86d61163c8ffad42\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"81819f0fc8285a2a5a921c019e3e3d7b6169d225\",\n                            \"lessThan\": \"f66012909e7bf383fcdc5850709ed5716073fdc4\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"81819f0fc8285a2a5a921c019e3e3d7b6169d225\",\n                            \"lessThan\": \"7e287256904ee796c9477e3ec92b07f236481ef3\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"81819f0fc8285a2a5a921c019e3e3d7b6169d225\",\n                            \"lessThan\": \"1f0797f17927b5cad0fb7eced422f9a7c30a3191\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"81819f0fc8285a2a5a921c019e3e3d7b6169d225\",\n                            \"lessThan\": \"0ef7058b4dc6fcef622ac23b45225db57f17b83f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"81819f0fc8285a2a5a921c019e3e3d7b6169d225\",\n                            \"lessThan\": \"dda6ec365ab04067adae40ef17015db447e90736\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"81819f0fc8285a2a5a921c019e3e3d7b6169d225\",\n                            \"lessThan\": \"3baa1da473e6e50281324ff1d332d1a07a3bb02e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"81819f0fc8285a2a5a921c019e3e3d7b6169d225\",\n                            \"lessThan\": \"b4efccec8d06ceb10a7d34d7b1c449c569d53770\",\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                        \"mm/slub.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"2.6.22\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"2.6.22\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.4.299\",\n                            \"lessThanOrEqual\": \"5.4.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.243\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.192\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.151\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.105\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.46\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.16.6\",\n                            \"lessThanOrEqual\": \"6.16.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.17\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","score":7.1,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/872f2c34ff232af1e65ad2df86d61163c8ffad42","https://git.kernel.org/stable/c/f66012909e7bf383fcdc5850709ed5716073fdc4","https://git.kernel.org/stable/c/7e287256904ee796c9477e3ec92b07f236481ef3","https://git.kernel.org/stable/c/1f0797f17927b5cad0fb7eced422f9a7c30a3191","https://git.kernel.org/stable/c/0ef7058b4dc6fcef622ac23b45225db57f17b83f","https://git.kernel.org/stable/c/dda6ec365ab04067adae40ef17015db447e90736","https://git.kernel.org/stable/c/3baa1da473e6e50281324ff1d332d1a07a3bb02e","https://git.kernel.org/stable/c/b4efccec8d06ceb10a7d34d7b1c449c569d53770"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-39902","license":"CVE Program Terms of Use","key":"cve-program:CVE-2025-39902","identifiers":["CVE-2025-39902"]},"retained":false,"historicalAffected":[]}],"coverage":[]}