Description
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.
Metrics
No CVSS score has been published yet.
Affected software
Source: the vendor's advisory (CNA). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 2111bb970c787b16b002dc726c1d296ce87a00fb, < a751ccdc6ea9bde154f25a5ba66926f462f96c19; >= 2111bb970c787b16b002dc726c1d296ce87a00fb, < 1dce4f4bb3c1c02080b1a45bdd2abb2913a6642a; >= 2111bb970c787b16b002dc726c1d296ce87a00fb, < ae0265f0a95aaacef59d560a3e1ea36db8be9a52; >= 2111bb970c787b16b002dc726c1d296ce87a00fb, < bb09d0e64ecaa0aa0f7d1133a1696ed74dead295 |
| Linux | Linux | 6.12 |
References
Timeline
- Published
- Aug 15, 2026
- Last modified
- Aug 17, 2026
- NVD status
- Received