CVE-2026-72004
wifi: mac80211: fix memory leak in ieee80211_register_hw()
At a glance
- Source
- NVD
- EPSS
- EPSS 0.22 % · percentile 12 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Received
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.
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
European references
- ENISA EUVD · EUVD-2026-59103
- GCVE · GCVE-0-2026-72004
CERT-FR advisories
- CERTFR-2026-AVI-1385 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1333 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1286 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected 09b4a4faf9d037990ac4f8110dd944b27b42d5df < f01eec75fd372961550b928902f3a2c11fca1daf ; affected 09b4a4faf9d037990ac4f8110dd944b27b42d5df < 3d8b9b290421c3cd505fcd2f551f143f8142786a ; affected 09b4a4faf9d037990ac4f8110dd944b27b42d5df < 08b71bd92317f99642b842cfc0d30200868162fc ; affected 09b4a4faf9d037990ac4f8110dd944b27b42d5df < a02b52fe54f7b5107aefa1ce28c2f69749c57616 ; affected 09b4a4faf9d037990ac4f8110dd944b27b42d5df < 45e9ac538cdff7bce656d731114a64eda85af0d7 ; affected 09b4a4faf9d037990ac4f8110dd944b27b42d5df < bdc0b8bfdc142439d6708b072e8159eb515ee7b0 |
| Linux · Linux | affected 4.20 ; unaffected 0 < 4.20 ; unaffected 5.10.261 ≤ 5.10.* ; unaffected 5.15.212 ≤ 5.15.* ; unaffected 6.1.178 ≤ 6.1.* ; unaffected 6.6.145 ≤ 6.6.* |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |