What’s Vulnerable › Vulnerabilities

CVE-2026-90346: wifi: nl80211: clean up color-change beacon data on errors

• Severity: unknown
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-17 · updated 2026-10-30

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: nl80211: clean up color-change beacon data on errors nl80211_color_change() calls nl80211_parse_beacon() for the beacon_next template, which can allocate params.beacon_next.mbssid_ies and .rnr_ies. A parsing failure returned directly instead of using the out: cleanup, leaking any allocations completed before the error. Allocate the nested attribute table before parsing beacon_next. Its allocation failure can then return before beacon data exists, while a later parsing failure uses out: to release the parsed data.

Affected products

• Linux: 5.16 — fixed in 7.3

How to fix

Upgrade to a fixed version: Linux 7.3. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/0ec1d14cf302ae7c23ec218527b2849a1fced3f4
• https://git.kernel.org/stable/c/4e0a67fbe3d9e2e1d6f81dfc607184c6b0abd3dd
• https://git.kernel.org/stable/c/5f47c9bc4a62e61f932a83680a796bc09ae48dd3
• https://git.kernel.org/stable/c/62f8c28a0fb08611e1278ab2af964550e22aac3c
• https://git.kernel.org/stable/c/927ee844c47ac2aef22c8f7a35f098ff576b398b
• https://git.kernel.org/stable/c/bbe3a69a7b64398dddd1c989e9a40eaa57616b33

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