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.
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon_linux_2023 | — | Upgrade python3-perf6.12-debuginfoUpgrade kernel6.12-tools-debuginfoUpgrade python3-perf6.12Upgrade kernel-livepatch-6.12.103-127.188Upgrade kernel6.12-develUpgrade perf6.12-debuginfoUpgrade kernel6.12-headersUpgrade kernel6.12-debuginfo-common-x86_64Upgrade bpftool6.12Upgrade kernel6.12-modules-extra-commonUpgrade kernel6.12-toolsUpgrade perf6.12Upgrade kernel6.12-debuginfoUpgrade kernel6.12-tools-develUpgrade kernel6.12-debuginfo-common-aarch64Upgrade kernel6.12-modules-extraUpgrade kernel6.12Upgrade bpftool6.12-debuginfo | Sep 1, 2026 | Aug 15, 2026 |
| Debian | — | Upgrade linux-6.12Upgrade linux | Aug 16, 2026 | Aug 16, 2026 |
| Redhat_linux | — | No solution exists | Aug 19, 2026 | Aug 15, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Aug 25, 2026 | Aug 15, 2026 |
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