UBUNTU-CVE-2026-89653

In the Linux kernel, the following vulnerability has been resolved: ceph: reject exporttargets ranks = CEPHMAXMDS in mdsmap decode MDSMap exporttargets entries are monitor controlled. checknewmap uses each entry as a bit number in a fixed stack bitmap, so a rank outside the protocol namespace can...

PT-2026-90366

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An out-of-bounds read exists in the CephFS client kernel when processing CEPH MSG MDS MAP messages. The function ceph mdsmap decode in fs/ceph/mdsmap.c reads the num export targets...

PT-2026-96530

In the Linux kernel, the following vulnerability has been resolved: ceph: bound num export targets array for mds info v2/v3 ceph mdsmap decode in fs/ceph/mdsmap.c reads num export targets from each per-mds info record and advances the decode cursor by num export targets sizeofu32 without first...