CVE-2026-74297
7.8
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c < 9fff54929cc00849d738faa99f06c32399aeb026 | affected |
| Linux | Linux | e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c < b746f949c2ac2b041102836095d6d4a2ef21fa75 | affected |
| Linux | Linux | e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c < c1dbf52d24a8cb1aa56780ba51b72e7d495f258c | affected |
| Linux | Linux | e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c < 6fc874fdfb366bfb11c62e6af9a831c8be59ddda | affected |
| Linux | Linux | e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c < 42f3d2c8c18b92ea33e506a38b64f1a8986c2823 | affected |
| Linux | Linux | e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c < 4b87a2497276a72fd63028e7419abf0fb7ed837b | affected |
| Linux | Linux | e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c < b732db02a2b04cde393638df19de6251ce62a74e | affected |
| Linux | Linux | e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c < d881d60223aac8fdc12b227d89c76e131e92a9cd | affected |
| Linux | Linux | 3.11 | affected |
| Linux | Linux | 0 < 3.11 | unaffected |
| Linux | Linux | 5.10.261 <= 5.10.* | unaffected |
| Linux | Linux | 5.15.212 <= 5.15.* | unaffected |
| Linux | Linux | 6.1.178 <= 6.1.* | unaffected |
| Linux | Linux | 6.6.145 <= 6.6.* | unaffected |
| Linux | Linux | 6.12.97 <= 6.12.* | unaffected |
| Linux | Linux | 6.18.40 <= 6.18.* | unaffected |
| Linux | Linux | 7.1.5 <= 7.1.* | unaffected |
| Linux | Linux | 7.2 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/9fff54929cc00849d738faa99f06c32399aeb026
- https://git.kernel.org/stable/c/b746f949c2ac2b041102836095d6d4a2ef21fa75
- https://git.kernel.org/stable/c/c1dbf52d24a8cb1aa56780ba51b72e7d495f258c
- https://git.kernel.org/stable/c/6fc874fdfb366bfb11c62e6af9a831c8be59ddda
- https://git.kernel.org/stable/c/42f3d2c8c18b92ea33e506a38b64f1a8986c2823
- https://git.kernel.org/stable/c/4b87a2497276a72fd63028e7419abf0fb7ed837b
- https://git.kernel.org/stable/c/b732db02a2b04cde393638df19de6251ce62a74e
- https://git.kernel.org/stable/c/d881d60223aac8fdc12b227d89c76e131e92a9cd
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