Description
In the Linux kernel, the following vulnerability has been resolved: ceph: reject export_targets ranks >= CEPH_MAX_MDS in mdsmap decode MDSMap export_targets entries are monitor controlled. check_new_map() uses each entry as a bit number in a fixed stack bitmap, so a rank outside the protocol namespace can make set_bit() write past the end of the array. Reject ranks outside CEPH_MAX_MDS while decoding the map. Do not validate against possible_max_rank here because maps may legitimately reference ranks beyond a temporarily reduced max_mds.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
d517b3983dd3106ca92d6c5d0d09415a4a09481c to < 3740c88ca9cb2210a8dbdd55ea4cec119fbe86feaffectedd517b3983dd3106ca92d6c5d0d09415a4a09481c to < 8c823bbab3c24e657469a84db96902ba82d4e8bbaffectedd517b3983dd3106ca92d6c5d0d09415a4a09481c to < c4addccd05bacbef2144b4db14853d0308a218acaffectedd517b3983dd3106ca92d6c5d0d09415a4a09481c to < 736adee11af36e407ed902264f8b2fb5cf94b62faffectedd517b3983dd3106ca92d6c5d0d09415a4a09481c to < 4d298880f82c42383b36946bafde7ccf4d804c9baffectedd517b3983dd3106ca92d6c5d0d09415a4a09481c to < 96c3f5fbb0d5386e7111426f047f98cec4586674affectedd517b3983dd3106ca92d6c5d0d09415a4a09481c to < aedc9053d909508a5f56c3f49f885fc030df4730affected
Linux Linux
Default version status: affected
5.15affected0 to < 5.15unaffected5.15.221 to ≤ 5.15.*unaffected6.1.188 to ≤ 6.1.*unaffected6.6.157 to ≤ 6.6.*unaffected6.12.109 to ≤ 6.12.*unaffected6.18.50 to ≤ 6.18.*unaffected7.2.4 to ≤ 7.2.*unaffected7.3 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/3740c88ca9cb2210a8dbdd55ea4cec119fbe86fe ↗
- https://git.kernel.org/stable/c/8c823bbab3c24e657469a84db96902ba82d4e8bb ↗
- https://git.kernel.org/stable/c/c4addccd05bacbef2144b4db14853d0308a218ac ↗
- https://git.kernel.org/stable/c/736adee11af36e407ed902264f8b2fb5cf94b62f ↗
- https://git.kernel.org/stable/c/4d298880f82c42383b36946bafde7ccf4d804c9b ↗
- https://git.kernel.org/stable/c/96c3f5fbb0d5386e7111426f047f98cec4586674 ↗
- https://git.kernel.org/stable/c/aedc9053d909508a5f56c3f49f885fc030df4730 ↗