Detections
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CVE-2026-68157
high
Description
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 ]
References
https://git.kernel.org/stable/c/db9cc9fd9660b2d69ee66f5a4cbec83c21a1c64d
https://git.kernel.org/stable/c/cbfcba275326c8c7dae9acd8f4a0d4c316fdafb0
https://git.kernel.org/stable/c/c46d82c47afc968d6ee8ef4470fa2dd35b765c21
https://git.kernel.org/stable/c/bbeae12fda3384a90fbebc8a19ba9d33f85b5361
https://git.kernel.org/stable/c/8ff579ac03d6e9d17d6d9c8443110167c14a382d
https://git.kernel.org/stable/c/6a4b75d90f0cfbf22c14742ab35a803bc13f36ec
https://git.kernel.org/stable/c/4716a64b7cc2797741f7be4e283ace78a9dff37d
https://git.kernel.org/stable/c/3767c9f0c1bbd98dd25cb088356a0fc6c1f09f50