CVE-2026-90378
In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt792x: Fix memory leak in SDIO TX path When tx_prepare_skb() returns an error in the SDIO TX path, the skb is not freed, leading to a memory leak. This can occur when zero-length frames (such as WNM NULL frames) are dropped to prevent potential hardware TX hangs. Fix this by properly releasing the skb with ieee80211_tx_status_ext() when tx_prepare_skb() fails.
Affected versions
Linux kernel versions
5.12
and later are affected. Fixed in
5.15.221,
6.1.188,
6.6.157,
6.12.110,
6.18.52,
7.2.6,
7.3-rc1
and their respective stable series.
References
7 totalFrequently asked questions
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What is CVE-2026-90378?
CVE-2026-90378 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 5.12 onward and has been patched in 5.15.221, 6.1.188, 6.6.157 and others. CVE-2026-90378 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2026-90378?
Yes. CVE-2026-90378 has been patched. Fixed versions include 5.15.221, 6.1.188, 6.6.157 and others. If you are running Linux kernel 5.12 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-90378 actively exploited?
No. CVE-2026-90378 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.