CVEvulnerability
CVE-2026-74297
7.8 HIGH
Official page ↗
- Status
- Received
- Published
- 2026-08-15
- Last modified
- 2026-10-16
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- CVSS 3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
- 7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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.
References
- https://git.kernel.org/stable/c/42f3d2c8c18b92ea33e506a38b64f1a8986c2823 git.kernel.org
- https://git.kernel.org/stable/c/4b87a2497276a72fd63028e7419abf0fb7ed837b git.kernel.org
- https://git.kernel.org/stable/c/6fc874fdfb366bfb11c62e6af9a831c8be59ddda git.kernel.org
- https://git.kernel.org/stable/c/9fff54929cc00849d738faa99f06c32399aeb026 git.kernel.org
- https://git.kernel.org/stable/c/b732db02a2b04cde393638df19de6251ce62a74e git.kernel.org
- https://git.kernel.org/stable/c/b746f949c2ac2b041102836095d6d4a2ef21fa75 git.kernel.org
- https://git.kernel.org/stable/c/c1dbf52d24a8cb1aa56780ba51b72e7d495f258c git.kernel.org
- https://git.kernel.org/stable/c/d881d60223aac8fdc12b227d89c76e131e92a9cd git.kernel.org