CVE-2026-74297

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.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/42f3d2c8c18b92ea33e506a38b64f1a8986c2823
https://git.kernel.org/stable/c/4b87a2497276a72fd63028e7419abf0fb7ed837b
https://git.kernel.org/stable/c/6fc874fdfb366bfb11c62e6af9a831c8be59ddda
https://git.kernel.org/stable/c/9fff54929cc00849d738faa99f06c32399aeb026
https://git.kernel.org/stable/c/b732db02a2b04cde393638df19de6251ce62a74e
https://git.kernel.org/stable/c/b746f949c2ac2b041102836095d6d4a2ef21fa75
https://git.kernel.org/stable/c/c1dbf52d24a8cb1aa56780ba51b72e7d495f258c
https://git.kernel.org/stable/c/d881d60223aac8fdc12b227d89c76e131e92a9cd

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-15 06:22

Updated : 2026-08-17 06:19

NVD link : CVE-2026-74297

Mitre link : CVE-2026-74297

CVE.ORG link : CVE-2026-74297

JSON object : View

Products Affected

No product.

CWE

No CWE.

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A shift of 31 also overflows a\nsigned integer, leading to undefined behavior.\n\nUse check_shl_overflow() to compute the RQ WQE size and reject any\ninvalid values."}], "lastModified": "2026-08-17T06:19:23.803", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}