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CVE-2026-72004

UnknownEPSS 0.21%

Last modified

CVE-2026-72004 is a vulnerability of currently unknown severity. 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. EPSS estimates a 0.21% chance of exploitation in the next 30 days.

Description

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.

Metrics

EPSS Probability
0.21%

11.6th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 09b4a4faf9d037990ac4f8110dd944b27b42d5df, < f01eec75fd372961550b928902f3a2c11fca1daf; >= 09b4a4faf9d037990ac4f8110dd944b27b42d5df, < 3d8b9b290421c3cd505fcd2f551f143f8142786a; >= 09b4a4faf9d037990ac4f8110dd944b27b42d5df, < 08b71bd92317f99642b842cfc0d30200868162fc; >= 09b4a4faf9d037990ac4f8110dd944b27b42d5df, < a02b52fe54f7b5107aefa1ce28c2f69749c57616; >= 09b4a4faf9d037990ac4f8110dd944b27b42d5df, < 45e9ac538cdff7bce656d731114a64eda85af0d7; >= 09b4a4faf9d037990ac4f8110dd944b27b42d5df, < bdc0b8bfdc142439d6708b072e8159eb515ee7b0; >= 09b4a4faf9d037990ac4f8110dd944b27b42d5df, < a7584f261e64fe14e45bdf70f343e16c1ee3a037; >= 09b4a4faf9d037990ac4f8110dd944b27b42d5df, < 95fc02722edde02946d0d475221f2b2054d3d8ba
LinuxLinux4.20

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-72004?
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.
How severe is CVE-2026-72004?
Severity scoring for CVE-2026-72004 is pending analysis. The EPSS model estimates a 0.21% probability of exploitation in the next 30 days.
How do I fix CVE-2026-72004?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST