In the Linux kernel, the following vulnerability has been resolved: RDMA/mlx5: Fix undefined shift of user RQ WQE size set_rq_size() co…
CVE-2026-74297 · published 15 Aug 2026
How serious is it
- Severity: high, CVSS score 7.8 out of 10.
- No exploit prediction (EPSS) score yet.
- Not on the CISA list of exploited vulnerabilities.
- No public exploit in Exploit-DB.
Is your app affected by CVE-2026-74297?
Paste this prompt into Claude Code, Cursor or any AI coding tool: it runs a free Shippable scan of your project and fixes what it finds. Built with Lovable, Bolt or v0? Scan your live app. Or upload your package file.
Who is affected
- Linux Linux: 3.11
How to check
- Find out whether you run the affected product and which version, then compare it with the versions above.
How to fix
Copies a prompt for Claude Code, Cursor or Codex that asks it to check whether you run this product.
- Apply the vendor's update or mitigation from the references below. If there is none yet, limit exposure of the affected service until there is.
- If a vulnerable version was live, check your logs and rotate the secrets that server could read.
The advisory
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.
Check your whole app
Dependencies are only half of it. Free and read-only: before you push, run npx shippable-dev scan localhost:3000 in your project folder, no account needed. For your live app, you prove it's yours with a one-line tag first.
References
- git.kernel.org/stable/c/42f3d2c8c18b92ea33e506a38b64f1a8986c2823
- git.kernel.org/stable/c/4b87a2497276a72fd63028e7419abf0fb7ed837b
- git.kernel.org/stable/c/6fc874fdfb366bfb11c62e6af9a831c8be59ddda
- git.kernel.org/stable/c/9fff54929cc00849d738faa99f06c32399aeb026
- git.kernel.org/stable/c/b732db02a2b04cde393638df19de6251ce62a74e
- git.kernel.org/stable/c/b746f949c2ac2b041102836095d6d4a2ef21fa75
- git.kernel.org/stable/c/c1dbf52d24a8cb1aa56780ba51b72e7d495f258c
- git.kernel.org/stable/c/d881d60223aac8fdc12b227d89c76e131e92a9cd
Merged from NVD. Last updated 23 Oct 2026. All vulnerabilities · RSS · JSON