CVE-2026-74297
Description
In the Linux kernel, the following vulnerability has been resolved: RDMA/mlx5: Fix undefined shift of user RQ WQE size set_rq_size() computes the RQ WQE size as "1 << rq_wqe_shift" based on the user-provided rq_wqe_shift, which is only checked to be greater than 32, so shifts of 32 are still accepted. A shift of 31 also overflows a signed integer, leading to undefined behavior. Use check_shl_overflow() to compute the RQ WQE size and reject any invalid values.
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/42f3d2c8c18b92ea33e506a38b64f1a8986c2823
- https://git.kernel.org/stable/c/4b87a2497276a72fd63028e7419abf0fb7ed837b
- https://git.kernel.org/stable/c/6fc874fdfb366bfb11c62e6af9a831c8be59ddda
- https://git.kernel.org/stable/c/9fff54929cc00849d738faa99f06c32399aeb026
- https://git.kernel.org/stable/c/b732db02a2b04cde393638df19de6251ce62a74e
- https://git.kernel.org/stable/c/b746f949c2ac2b041102836095d6d4a2ef21fa75
- https://git.kernel.org/stable/c/c1dbf52d24a8cb1aa56780ba51b72e7d495f258c
- https://git.kernel.org/stable/c/d881d60223aac8fdc12b227d89c76e131e92a9cd
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.