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.

Metrics

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

Vendors Products
Linux
  • Linux Kernel

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References
Link Providers
https://git.kernel.org/stable/c/42f3d2c8c18b92ea33e506a38b64f1a8986c2823 cve-icon cve-icon
https://git.kernel.org/stable/c/4b87a2497276a72fd63028e7419abf0fb7ed837b cve-icon cve-icon
https://git.kernel.org/stable/c/6fc874fdfb366bfb11c62e6af9a831c8be59ddda cve-icon cve-icon
https://git.kernel.org/stable/c/9fff54929cc00849d738faa99f06c32399aeb026 cve-icon cve-icon
https://git.kernel.org/stable/c/b732db02a2b04cde393638df19de6251ce62a74e cve-icon cve-icon
https://git.kernel.org/stable/c/b746f949c2ac2b041102836095d6d4a2ef21fa75 cve-icon cve-icon
https://git.kernel.org/stable/c/c1dbf52d24a8cb1aa56780ba51b72e7d495f258c cve-icon cve-icon
https://git.kernel.org/stable/c/d881d60223aac8fdc12b227d89c76e131e92a9cd cve-icon cve-icon
History

Sat, 15 Aug 2026 06:15:00 +0000

Type Values Removed Values Added
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.
Title RDMA/mlx5: Fix undefined shift of user RQ WQE size
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-08-15T05:58:01.414Z

Reserved: 2026-08-15T05:44:03.882Z

Link: CVE-2026-74297

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-15T06:22:29.307

Modified: 2026-08-15T06:22:29.307

Link: CVE-2026-74297

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

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