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CVE-2026-74297

HIGHCVSS 7.8/10EPSS 0.18%

Last modified

CVE-2026-74297 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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.. EPSS estimates a 0.18% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
0.18%

7.4th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c, < 9fff54929cc00849d738faa99f06c32399aeb026; >= e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c, < b746f949c2ac2b041102836095d6d4a2ef21fa75; >= e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c, < c1dbf52d24a8cb1aa56780ba51b72e7d495f258c; >= e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c, < 6fc874fdfb366bfb11c62e6af9a831c8be59ddda; >= e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c, < 42f3d2c8c18b92ea33e506a38b64f1a8986c2823; >= e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c, < 4b87a2497276a72fd63028e7419abf0fb7ed837b; >= e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c, < b732db02a2b04cde393638df19de6251ce62a74e; >= e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c, < d881d60223aac8fdc12b227d89c76e131e92a9cd
LinuxLinux3.11

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is 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.
How severe is CVE-2026-74297?
CVE-2026-74297 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.18% probability of exploitation in the next 30 days.
How do I fix CVE-2026-74297?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST