CVE-2026-68154
In the Linux kernel, the following vulnerability has been resolved: libceph: reject zero bucket types in crush_decode CRUSH bucket type 0 is reserved for devic…
Impact
In the Linux kernel, the following vulnerability has been resolved: libceph: reject zero bucket types in crush_decode CRUSH bucket type 0 is reserved for devices. The mapper relies on that invariant and uses type 0 to identify leaf devices. If crush_decode() accepts a bucket with type 0, a malformed CRUSH map can make the mapper treat a negative bucket ID as a device and pass it to is_out(), which then indexes the OSD weight array with a negative value. Reject zero bucket types while decoding the CRUSH map so the invalid state never reaches the mapper.
Affected packages
This record carries no package version data, so it cannot be matched against a dependency list automatically. Read the advisory and compare your version by hand.
Weakness classification
References
- NVD record
- CVE.org record
- https://git.kernel.org/stable/c/05f90284223381005d6bcddab3fda4a97f9c3401
- https://git.kernel.org/stable/c/146461f09565afe3665e65b0423d3d6b0fe806c5
- https://git.kernel.org/stable/c/3b2f1937f5fce8b7dd5432e7693e3cc8b5eece56
- https://git.kernel.org/stable/c/70998f91030ee083ecb336a1dff0701c20a38081
- https://git.kernel.org/stable/c/80fc40e11cda1b5d990a3f69c6efa344fb5cd987
- https://git.kernel.org/stable/c/826cd1de5802fd392922785f9b64d76e65d2a100
- https://git.kernel.org/stable/c/952ca5dc99913d169263f59fd689f586729a13c1
- https://git.kernel.org/stable/c/b8a9fb6bf806f9c4891e71ae1beab0c07c23a877