Description
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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
7bc04215a66b60e198aecaee8418f6d79fa19faa to < 61b1f6d92249bc34580ff19de7c69c805f82adcaaffected7bc04215a66b60e198aecaee8418f6d79fa19faa to < c65bbfc730df9ebf0fea8e286b0ad2dfab03dbfeaffected7bc04215a66b60e198aecaee8418f6d79fa19faa to < d55e7aede542c4c76ead82d37d0c112f21eb2ac2affected7bc04215a66b60e198aecaee8418f6d79fa19faa to < b6e7958602bd1acdb8ae92703b6689a28bcc9bc0affected7bc04215a66b60e198aecaee8418f6d79fa19faa to < 2d31e332c13b1db7745a7bd9cf74bc105524bcacaffected7bc04215a66b60e198aecaee8418f6d79fa19faa to < 17d6b89e09eac2d90272fceeba3644e92212e02faffected7bc04215a66b60e198aecaee8418f6d79fa19faa to < 6def491fe9c4e83aa8cba62d74e9d4ab751ee967affected7bc04215a66b60e198aecaee8418f6d79fa19faa to < 81497634d9f872fd3e8b03aada55574afff6f174affected
Linux Linux
Default version status: affected
4.16affected0 to < 4.16unaffected5.10.270 to ≤ 5.10.*unaffected5.15.221 to ≤ 5.15.*unaffected6.1.188 to ≤ 6.1.*unaffected6.6.157 to ≤ 6.6.*unaffected6.12.110 to ≤ 6.12.*unaffected6.18.52 to ≤ 6.18.*unaffected7.2.6 to ≤ 7.2.*unaffected7.3 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/61b1f6d92249bc34580ff19de7c69c805f82adca ↗
- https://git.kernel.org/stable/c/c65bbfc730df9ebf0fea8e286b0ad2dfab03dbfe ↗
- https://git.kernel.org/stable/c/d55e7aede542c4c76ead82d37d0c112f21eb2ac2 ↗
- https://git.kernel.org/stable/c/b6e7958602bd1acdb8ae92703b6689a28bcc9bc0 ↗
- https://git.kernel.org/stable/c/2d31e332c13b1db7745a7bd9cf74bc105524bcac ↗
- https://git.kernel.org/stable/c/17d6b89e09eac2d90272fceeba3644e92212e02f ↗
- https://git.kernel.org/stable/c/6def491fe9c4e83aa8cba62d74e9d4ab751ee967 ↗
- https://git.kernel.org/stable/c/81497634d9f872fd3e8b03aada55574afff6f174 ↗