{"id":"CVE-2026-68157","summary":"libceph: guard missing CRUSH type name lookup","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nlibceph: guard missing CRUSH type name lookup\n\nLocalized read selection can walk a parent bucket whose name exists in\nthe CRUSH map while its type has no matching entry in type_names.\nget_immediate_parent() then dereferences a NULL type_cn and passes an\ninvalid pointer into strcmp(), causing a null-ptr-deref.\n\nSkip such malformed parent buckets unless both the bucket name and type\nname metadata are present. This keeps malformed hierarchy data from\ncrashing locality lookup and safely falls back to \"not local\".\n\n[ idryomov: add WARN_ON_ONCE ]","modified":"2026-08-21T03:30:16.034401117Z","published":"2026-08-10T11:59:23.692Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68157.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/3767c9f0c1bbd98dd25cb088356a0fc6c1f09f50"},{"type":"WEB","url":"https://git.kernel.org/stable/c/4716a64b7cc2797741f7be4e283ace78a9dff37d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6a4b75d90f0cfbf22c14742ab35a803bc13f36ec"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8ff579ac03d6e9d17d6d9c8443110167c14a382d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/bbeae12fda3384a90fbebc8a19ba9d33f85b5361"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c46d82c47afc968d6ee8ef4470fa2dd35b765c21"},{"type":"WEB","url":"https://git.kernel.org/stable/c/cbfcba275326c8c7dae9acd8f4a0d4c316fdafb0"},{"type":"WEB","url":"https://git.kernel.org/stable/c/db9cc9fd9660b2d69ee66f5a4cbec83c21a1c64d"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68157.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-68157"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"117d96a04f007ce8fc2e292369056c3bd09f6f63"},{"fixed":"cbfcba275326c8c7dae9acd8f4a0d4c316fdafb0"},{"fixed":"8ff579ac03d6e9d17d6d9c8443110167c14a382d"},{"fixed":"6a4b75d90f0cfbf22c14742ab35a803bc13f36ec"},{"fixed":"c46d82c47afc968d6ee8ef4470fa2dd35b765c21"},{"fixed":"3767c9f0c1bbd98dd25cb088356a0fc6c1f09f50"},{"fixed":"4716a64b7cc2797741f7be4e283ace78a9dff37d"},{"fixed":"db9cc9fd9660b2d69ee66f5a4cbec83c21a1c64d"},{"fixed":"bbeae12fda3384a90fbebc8a19ba9d33f85b5361"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-68157.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.8.0"},{"fixed":"5.10.265"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.216"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.183"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.148"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.101"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.42"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.1.6"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-68157.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}