Answer in brief
CVE-2026-90382 records a Unknown severity vulnerability in wifi: mt76: mt76x02: do not WARN on invalid rx descriptor length. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=7bc04215a66b60e198aecaee8418f6d79fa19faa <61b1f6d92249bc34580ff19de7c69c805f82adca || >=7bc04215a66b60e198aecaee8418f6d79fa19faa <c65bbfc730df9ebf0fea8e286b0ad2dfab03dbfe || >=7bc04215a66b60e198aecaee8418f6d79fa19faa <d55e7aede542c4c76ead82d37d0c112f21eb2ac2 || >=7bc04215a66b60e198aecaee8418f6d79fa19faa <b6e7958602bd1acdb8ae92703b6689a28bcc9bc0 || >=7bc04215a66b60e198aecaee8418f6d79fa19faa <2d31e332c13b1db7745a7bd9cf74bc105524bcac || >=7bc04215a66b60e198aecaee8418f6d79fa19faa <17d6b89e09eac2d90272fceeba3644e92212e02f || >=7bc04215a66b60e198aecaee8418f6d79fa19faa <6def491fe9c4e83aa8cba62d74e9d4ab751ee967 || >=7bc04215a66b60e198aecaee8418f6d79fa19faa <81497634d9f872fd3e8b03aada55574afff6f174 | 61b1f6d92249bc34580ff19de7c69c805f82adca, c65bbfc730df9ebf0fea8e286b0ad2dfab03dbfe, d55e7aede542c4c76ead82d37d0c112f21eb2ac2, b6e7958602bd1acdb8ae92703b6689a28bcc9bc0, 2d31e332c13b1db7745a7bd9cf74bc105524bcac, 17d6b89e09eac2d90272fceeba3644e92212e02f, 6def491fe9c4e83aa8cba62d74e9d4ab751ee967, 81497634d9f872fd3e8b03aada55574afff6f174 |
| Linux/Linuxgeneric | 4.16 | Not reported |
Published upstream
Sep 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 17, 2026
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.
Quoted source text, attributed separately from HOL analysis.