CVE-2025-21800

net/mlx5: HWS, fix definer's HWS_SET32 macro for negative offset

Description

In the Linux kernel, the following vulnerability has been resolved: net/mlx5: HWS, fix definer's HWS_SET32 macro for negative offset When bit offset for HWS_SET32 macro is negative, UBSAN complains about the shift-out-of-bounds: UBSAN: shift-out-of-bounds in drivers/net/ethernet/mellanox/mlx5/core/steering/hws/definer.c:177:2 shift exponent -8 is negative

N/A

CVSS

Severity:

EPSS 0.03%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/92cff996624c4757d5bbace3dfa3f1567ba94143
https://git.kernel.org/stable/c/69c676c0ded472713e6d1b3a456b3c4f52f66f0e
https://git.kernel.org/stable/c/be482f1d10da781db9445d2753c1e3f1fd82babf

Frequently Asked Questions

What is the severity of CVE-2025-21800?: CVE-2025-21800 has not yet been assigned a CVSS score.
How to fix CVE-2025-21800?: To fix CVE-2025-21800, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-21800 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2025-21800 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-21800?: CVE-2025-21800 affects Linux Linux, Linux Linux.

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