CVE-2026-90382 Affecting linux-6.12 package, versions <6.12.111-1~deb12u1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DEBIAN12-LINUX612-20507244
- published5 Oct 2026
- disclosed17 Sept 2026
Introduced: 17 Sep 2026
NewCVE-2026-90382 (opens in a new tab)How to fix?
Upgrade Debian:12 linux-6.12 to version 6.12.111-1~deb12u1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream linux-6.12 package and not the linux-6.12 package as distributed by Debian.
See How to fix? for Debian:12 relevant fixed versions and status.
In the Linux kernel, the following vulnerability has been resolved:
wifi: mt76: mt76x02: do not WARN on invalid rx descriptor length
The MPDU length in the rx descriptor comes from the hardware. In monitor mode with the fcsfail filter enabled, the hardware passes up corrupted frames, and a corrupted frame can report a length larger than the received buffer. The bounds check correctly discards such frames, but its WARN_ON_ONCE wrapper means any over-the-air garbage frame taints the kernel, and panics it on the first such frame when panic_on_warn is set.
Drop the WARN and discard the frame silently, matching what commit c2d4c8723dbf ("mt76x2: remove some harmless WARN_ONs in tx status and rx path") did for the neighboring rx and tx status paths.
Observed immediately on rx with an MT7612U in fcsfail monitor mode on a busy channel.
References
- https://security-tracker.debian.org/tracker/CVE-2026-90382
- https://git.kernel.org/stable/c/17d6b89e09eac2d90272fceeba3644e92212e02f
- https://git.kernel.org/stable/c/2d31e332c13b1db7745a7bd9cf74bc105524bcac
- https://git.kernel.org/stable/c/61b1f6d92249bc34580ff19de7c69c805f82adca
- https://git.kernel.org/stable/c/6def491fe9c4e83aa8cba62d74e9d4ab751ee967
- https://git.kernel.org/stable/c/81497634d9f872fd3e8b03aada55574afff6f174
- https://git.kernel.org/stable/c/b6e7958602bd1acdb8ae92703b6689a28bcc9bc0
- https://git.kernel.org/stable/c/c65bbfc730df9ebf0fea8e286b0ad2dfab03dbfe
- https://git.kernel.org/stable/c/d55e7aede542c4c76ead82d37d0c112f21eb2ac2