In the Linux kernel, the following vulnerability has been resolved:

wifi: mac80211: fix memory leak in ieee80211_register_hw()

If kmemdup() fails while copying supported band structures, the error
path jumps to fail_rate. This skips rate_control_deinitialize() and
leaks the initialized local->rate_ctrl.

Fix this by adding a fail_band label that shares the rate-control cleanup
path before falling through to the remaining teardown.

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-rc7.

An x86_64 allyesconfig build showed no new warnings. As we do not have a
suitable mac80211 device/driver combination to test with, no runtime
testing was able to be performed.

https://git.kernel.org/stable/c/08b71bd92317f99642b842cfc0d30200868162fc

https://git.kernel.org/stable/c/3d8b9b290421c3cd505fcd2f551f143f8142786a

https://git.kernel.org/stable/c/45e9ac538cdff7bce656d731114a64eda85af0d7

https://git.kernel.org/stable/c/95fc02722edde02946d0d475221f2b2054d3d8ba

https://git.kernel.org/stable/c/a02b52fe54f7b5107aefa1ce28c2f69749c57616

https://git.kernel.org/stable/c/a7584f261e64fe14e45bdf70f343e16c1ee3a037

https://git.kernel.org/stable/c/bdc0b8bfdc142439d6708b072e8159eb515ee7b0

https://git.kernel.org/stable/c/f01eec75fd372961550b928902f3a2c11fca1daf

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