CVE-2026-72004wifi: mac80211: fix memory leak in ieee80211_register_hw()
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Aug 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 09b4a4faf9d037990ac4f8110dd944b27b42d5df before f01eec75fd372961550b928902f3a2c11fca1daf; 09b4a4faf9d037990ac4f8110dd944b27b42d5df builds before 3d8b9b290421c3cd505fcd2f551f143f8142786a; 09b4a4faf9d037990ac4f8110dd944b27b42d5df builds before 08b71bd92317f99642b842cfc0d30200868162fc; from 09b4a4faf9d037990ac4f8110dd944b27b42d5df before a02b52fe54f7b5107aefa1ce28c2f69749c57616; from 09b4a4faf9d037990ac4f8110dd944b27b42d5df before 45e9ac538cdff7bce656d731114a64eda85af0d7; from 09b4a4faf9d037990ac4f8110dd944b27b42d5df before bdc0b8bfdc142439d6708b072e8159eb515ee7b0; from 09b4a4faf9d037990ac4f8110dd944b27b42d5df before a7584f261e64fe14e45bdf70f343e16c1ee3a037; from 09b4a4faf9d037990ac4f8110dd944b27b42d5df before 95fc02722edde02946d0d475221f2b2054d3d8ba | CNA record |
References
- https://git.kernel.org/stable/c/f01eec75fd372961550b928902f3a2c11fca1daf
- https://git.kernel.org/stable/c/3d8b9b290421c3cd505fcd2f551f143f8142786a
- https://git.kernel.org/stable/c/08b71bd92317f99642b842cfc0d30200868162fc
- https://git.kernel.org/stable/c/a02b52fe54f7b5107aefa1ce28c2f69749c57616
- https://git.kernel.org/stable/c/45e9ac538cdff7bce656d731114a64eda85af0d7
- https://git.kernel.org/stable/c/bdc0b8bfdc142439d6708b072e8159eb515ee7b0
- https://git.kernel.org/stable/c/a7584f261e64fe14e45bdf70f343e16c1ee3a037
- https://git.kernel.org/stable/c/95fc02722edde02946d0d475221f2b2054d3d8ba
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.