CVE-2026-68157libceph: guard missing CRUSH type name lookup
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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 ]
- CVSS
- 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 117d96a04f007ce8fc2e292369056c3bd09f6f63 before cbfcba275326c8c7dae9acd8f4a0d4c316fdafb0; 117d96a04f007ce8fc2e292369056c3bd09f6f63 builds before 8ff579ac03d6e9d17d6d9c8443110167c14a382d; 117d96a04f007ce8fc2e292369056c3bd09f6f63 builds before 6a4b75d90f0cfbf22c14742ab35a803bc13f36ec; from 117d96a04f007ce8fc2e292369056c3bd09f6f63 before c46d82c47afc968d6ee8ef4470fa2dd35b765c21; from 117d96a04f007ce8fc2e292369056c3bd09f6f63 before 3767c9f0c1bbd98dd25cb088356a0fc6c1f09f50; from 117d96a04f007ce8fc2e292369056c3bd09f6f63 before 4716a64b7cc2797741f7be4e283ace78a9dff37d; from 117d96a04f007ce8fc2e292369056c3bd09f6f63 before db9cc9fd9660b2d69ee66f5a4cbec83c21a1c64d; from 117d96a04f007ce8fc2e292369056c3bd09f6f63 before bbeae12fda3384a90fbebc8a19ba9d33f85b5361 | CNA record |
References
- https://git.kernel.org/stable/c/cbfcba275326c8c7dae9acd8f4a0d4c316fdafb0
- https://git.kernel.org/stable/c/8ff579ac03d6e9d17d6d9c8443110167c14a382d
- https://git.kernel.org/stable/c/6a4b75d90f0cfbf22c14742ab35a803bc13f36ec
- https://git.kernel.org/stable/c/c46d82c47afc968d6ee8ef4470fa2dd35b765c21
- https://git.kernel.org/stable/c/3767c9f0c1bbd98dd25cb088356a0fc6c1f09f50
- https://git.kernel.org/stable/c/4716a64b7cc2797741f7be4e283ace78a9dff37d
- https://git.kernel.org/stable/c/db9cc9fd9660b2d69ee66f5a4cbec83c21a1c64d
- https://git.kernel.org/stable/c/bbeae12fda3384a90fbebc8a19ba9d33f85b5361
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.