← CVE Intelligence

CVE-2026-74297

RDMA/mlx5: Fix undefined shift of user RQ WQE size PUBLISHED

Description (CNA)

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 (CNA)

Vendor / productVersions
Linux / Linuxaffected e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c before 9fff54929cc00849d738faa99f06c32399aeb026; affected e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c before b746f949c2ac2b041102836095d6d4a2ef21fa75; affected e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c before c1dbf52d24a8cb1aa56780ba51b72e7d495f258c; affected e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c before 6fc874fdfb366bfb11c62e6af9a831c8be59ddda; affected e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c before 42f3d2c8c18b92ea33e506a38b64f1a8986c2823; affected e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c before 4b87a2497276a72fd63028e7419abf0fb7ed837b; affected e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c before b732db02a2b04cde393638df19de6251ce62a74e; affected e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c before d881d60223aac8fdc12b227d89c76e131e92a9cd
Linux / Linuxaffected 3.11; unaffected 0 before 3.11; unaffected 5.10.261 through 5.10.*; unaffected 5.15.212 through 5.15.*; unaffected 6.1.178 through 6.1.*; unaffected 6.6.145 through 6.6.*; unaffected 6.12.97 through 6.12.*; unaffected 6.18.40 through 6.18.*; unaffected 7.1.5 through 7.1.*; unaffected 7.2 through *

CWE

No CWE identifiers supplied.

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.