CVE-2026-74297
RDMA/mlx5: Fix undefined shift of user RQ WQE size
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Aug 15, 2026 |
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Affected Versions
Linux / Linux
e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c < 9fff54929cc00849d738faa99f06c32399aeb026 e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c < b746f949c2ac2b041102836095d6d4a2ef21fa75 e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c < c1dbf52d24a8cb1aa56780ba51b72e7d495f258c e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c < 6fc874fdfb366bfb11c62e6af9a831c8be59ddda e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c < 42f3d2c8c18b92ea33e506a38b64f1a8986c2823 e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c < 4b87a2497276a72fd63028e7419abf0fb7ed837b e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c < b732db02a2b04cde393638df19de6251ce62a74e e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c < d881d60223aac8fdc12b227d89c76e131e92a9cd
Linux / Linux
3.11
References
git.kernel.org: https://git.kernel.org/stable/c/9fff54929cc00849d738faa99f06c32399aeb026 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/6fc874fdfb366bfb11c62e6af9a831c8be59ddda git.kernel.org: 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/b732db02a2b04cde393638df19de6251ce62a74e git.kernel.org: https://git.kernel.org/stable/c/d881d60223aac8fdc12b227d89c76e131e92a9cd