Description
In the Linux kernel, the following vulnerability has been resolved: libceph: replace BUG_ON with bounds check for map->max_osd OSD indexes come from untrusted network packets. Boundary checks are added to validate these against map->max_osd. [ idryomov: drop BUG_ON in ceph_get_primary_affinity(), minor cosmetic edits ]
References5
- git.kernel.org/stable/c/57f5fbae9f1024aba17ff75e00433324115c548a
- git.kernel.org/stable/c/b4368b7f97014e1015445d61abd0b27c4c6e8424
- git.kernel.org/stable/c/becc488a4d864db338ebd4e313aa3c77da24b604
- git.kernel.org/stable/c/e67e3be690f5f7e3b031cf29e8d91e6d02a8e30d
- git.kernel.org/stable/c/ec3797f043756a94ea2d0f106022e14ac4946c02
Metrics
- CVSS 3.1
-
7.5
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 1% percentile: 45 · as of 11 November 2026
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.