What’s Vulnerable › Vulnerabilities

CVE-2026-90381: wifi: mt76: fix handling channel context with different bands in mt76_switch_vif_chanctx()

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-17 · updated 2026-10-19

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: fix handling channel context with different bands in mt76_switch_vif_chanctx() When performing channel switches on different radios within a short timeframe, channel contexts with different bands can be carried for each struct ieee80211_vif_chanctx_switch. Rework mt76_switch_vif_chanctx() to properly handle this scenario.

Affected products

• Linux kernel: 6.14 — fixed in 7.3

How to fix

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

References

• https://git.kernel.org/stable/c/063169a2755abdcbe7698d98360336abb6bef414
• https://git.kernel.org/stable/c/70869cc429fffc77de51e7777c0ecb651e8fca07
• https://git.kernel.org/stable/c/7a1b971b799eae8a957acb90d8100576df889644

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