CVE Catalog

CVE-2026-72032

Low risk· EPSS 10%
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.20%

10th percentile - higher than 10% of all known CVEs

Summary

In the Linux kernel, the mlx5 HWS driver has a memory leak when resize target setup fails. If mlx5hws_matcher_resize_set_target() fails, the replacement matcher is not attached anywhere and is leaked. The fix destroys the replacement matcher before returning from the error path.

Risk Assessment

The memory leak can lead to gradual exhaustion of system resources, potentially destabilizing the system or services over time.

Recommendation

It is recommended to update the Linux kernel to a version containing the fix and to monitor for memory leak reports in environments using mlx5 HWS.

Other vulnerabilities in Linux kernel

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Original NVD description (English source)

In the Linux kernel, the following vulnerability has been resolved: net/mlx5: HWS, fix matcher leak on resize target setup failure hws_bwc_matcher_move() allocates a replacement matcher before setting it as the resize target. If mlx5hws_matcher_resize_set_target() fails, the replacement matcher is not attached anywhere and is leaked. Fix the leak by destroying the replacement matcher before returning from the resize-target failure path. The bug was first flagged by an experimental analysis tool we are developing for kernel memory-management bugs while analyzing v6.13-rc1. The tool is still under development and is not yet publicly available. Manual inspection confirms that the bug is still present in v7.1.1. An x86_64 allyesconfig build showed no new warnings. As we do not have a mlx5 HWS-capable device to test with, no runtime testing was able to be performed.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS