CVE-2026-80880
Description
In the Linux kernel, the following vulnerability has been resolved: IB/mlx5: Properly support implicit ODP rereg_mr Due to all the child mkeys in the implicit ODP configuration we cannot change anything in place for the parent mkey. Instead the whole thing needs to be rebuilt if any change is requested. If the user does not specify a translation then force the implicit values which will then fall through the logic into mlx5_ib_reg_user_mr() to allocate a completely new MR. Since implicit children were also touching the mr->pd, this removes another case where the access was racy.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
Propose a mitigation on Community Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
References
- https://git.kernel.org/stable/c/5d02b9a2efd11d28d2a8feac7769686b1b871d9c
- https://git.kernel.org/stable/c/94f7e50eb6b2ce7fbd9aeac1db22460d2013a3fb
- https://git.kernel.org/stable/c/cbc9982c8573fb9e35040063aa78c8ebe768a1ff
- https://git.kernel.org/stable/c/d4f84bfa089fe71f775d25beb29303e844494c25
- https://git.kernel.org/stable/c/eb7cb798e563b3f3b3baeb9cc6f7455764267e50
- https://git.kernel.org/stable/c/ee7a8335069150c3f1893a697ab30bbeca00d796
- https://git.kernel.org/stable/c/ee914ef54a7e707453ecb43eb30fb0a5c6dd0d69
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.