CVE-2026-68157
libceph: guard missing CRUSH type name lookup
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: libceph: guard missing CRUSH type name lookup Localized read selection can walk a parent bucket whose name exists in the CRUSH map while its type has no matching entry in type_names. get_immediate_parent() then dereferences a NULL type_cn and passes an invalid pointer into strcmp(), causing a null-ptr-deref. Skip such malformed parent buckets unless both the bucket name and type name metadata are present. This keeps malformed hierarchy data from crashing locality lookup and safely falls back to "not local". [ idryomov: add WARN_ON_ONCE ]
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Aug 10, 2026 |
| Last Updated | Aug 19, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Linux / Linux
117d96a04f007ce8fc2e292369056c3bd09f6f63 < cbfcba275326c8c7dae9acd8f4a0d4c316fdafb0 117d96a04f007ce8fc2e292369056c3bd09f6f63 < 8ff579ac03d6e9d17d6d9c8443110167c14a382d 117d96a04f007ce8fc2e292369056c3bd09f6f63 < 6a4b75d90f0cfbf22c14742ab35a803bc13f36ec 117d96a04f007ce8fc2e292369056c3bd09f6f63 < c46d82c47afc968d6ee8ef4470fa2dd35b765c21 117d96a04f007ce8fc2e292369056c3bd09f6f63 < 3767c9f0c1bbd98dd25cb088356a0fc6c1f09f50 117d96a04f007ce8fc2e292369056c3bd09f6f63 < 4716a64b7cc2797741f7be4e283ace78a9dff37d 117d96a04f007ce8fc2e292369056c3bd09f6f63 < db9cc9fd9660b2d69ee66f5a4cbec83c21a1c64d 117d96a04f007ce8fc2e292369056c3bd09f6f63 < bbeae12fda3384a90fbebc8a19ba9d33f85b5361
Linux / Linux
5.8
References
git.kernel.org: https://git.kernel.org/stable/c/cbfcba275326c8c7dae9acd8f4a0d4c316fdafb0 git.kernel.org: https://git.kernel.org/stable/c/8ff579ac03d6e9d17d6d9c8443110167c14a382d git.kernel.org: https://git.kernel.org/stable/c/6a4b75d90f0cfbf22c14742ab35a803bc13f36ec git.kernel.org: https://git.kernel.org/stable/c/c46d82c47afc968d6ee8ef4470fa2dd35b765c21 git.kernel.org: https://git.kernel.org/stable/c/3767c9f0c1bbd98dd25cb088356a0fc6c1f09f50 git.kernel.org: https://git.kernel.org/stable/c/4716a64b7cc2797741f7be4e283ace78a9dff37d git.kernel.org: https://git.kernel.org/stable/c/db9cc9fd9660b2d69ee66f5a4cbec83c21a1c64d git.kernel.org: https://git.kernel.org/stable/c/bbeae12fda3384a90fbebc8a19ba9d33f85b5361