Unknown

CVE-2026-90382 — wifi: mt76: mt76x02: do not WARN on invalid rx descriptor length

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.

Published Sep 17, 2026 · Updated Oct 19, 2026 · Sources: NIST National Vulnerability Database, CVE Program (cve.org) e CISA ADP, GitHub Security Advisories · CNA: Linux

Low

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

No exploitation signal in the sources consulted so far.

How the score was calculated

EPSS 0.2% (30-day exploitation probability)+2

The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Exploitation

Not confirmed

Not in CISA KEV — an absence of record, not proof it is unexploited.

EPSS FIRST

0.21%

ahead of 11% of scored CVEs · Oct 18, 2026

Affects

Linux

CVSS base

—

Score not published yet.

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

No fix documented by the sources we poll. That does not mean none exists: check the vendor advisory.

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

Identify exposed assets running the affected vendor/product/version combinations (Linux Linux).
No fix documented in the sources: reduce exposure and monitor the vendor advisory.
Search available logs for exploit probes, errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

Vendor	Product	Versions	Status	Source
Linux	Linux	≥ 7bc04215a66b60e198aecaee8418f6d79fa19faa and < 61b1f6d92249bc34580ff19de7c69c805f82adca≥ 7bc04215a66b60e198aecaee8418f6d79fa19faa and < c65bbfc730df9ebf0fea8e286b0ad2dfab03dbfe≥ 7bc04215a66b60e198aecaee8418f6d79fa19faa and < d55e7aede542c4c76ead82d37d0c112f21eb2ac2≥ 7bc04215a66b60e198aecaee8418f6d79fa19faa and < b6e7958602bd1acdb8ae92703b6689a28bcc9bc0≥ 7bc04215a66b60e198aecaee8418f6d79fa19faa and < 2d31e332c13b1db7745a7bd9cf74bc105524bcac≥ 7bc04215a66b60e198aecaee8418f6d79fa19faa and < 17d6b89e09eac2d90272fceeba3644e92212e02f≥ 7bc04215a66b60e198aecaee8418f6d79fa19faa and < 6def491fe9c4e83aa8cba62d74e9d4ab751ee967≥ 7bc04215a66b60e198aecaee8418f6d79fa19faa and < 81497634d9f872fd3e8b03aada55574afff6f174 and 1 more version 4.16	Vulnerable	CVE Program (cve.org) e CISA ADP

EPSS over time FIRST

Oct 15, 2026 → Oct 18, 2026 · 3 reading(s) · max 0.21%

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

Not enough vector or weakness data: use the affected application’s logs as a starting point.

application logs

Timeline

What happened to this CVE, newest first.

2026
Record published
Oct 15, 2026
Affected products added · linux/linux
Oct 15, 2026 · CVE Program (cve.org) e CISA ADP
Source status changed · → Received
Oct 15, 2026 · NIST National Vulnerability Database
Record created in this database
Oct 15, 2026 · NIST National Vulnerability Database
CVE published
Sep 17, 2026 · Linux

Source activity

Repeated readings are counted rather than listed.

1× References added · Oct 19, 2026 – Oct 19, 2026
1× Official description updated · Oct 15, 2026 – Oct 15, 2026

References

10 on the record

git.kernel.org/stable/c/2d31e332c13b1db7745a7bd9cf74bc105524bcac
NIST National Vulnerability Database
git.kernel.org/stable/c/b6e7958602bd1acdb8ae92703b6689a28bcc9bc0
NIST National Vulnerability Database
git.kernel.org/stable/c/61b1f6d92249bc34580ff19de7c69c805f82adca
NIST National Vulnerability Database
git.kernel.org/stable/c/81497634d9f872fd3e8b03aada55574afff6f174
NIST National Vulnerability Database
git.kernel.org/stable/c/d55e7aede542c4c76ead82d37d0c112f21eb2ac2
NIST National Vulnerability Database
git.kernel.org/stable/c/6def491fe9c4e83aa8cba62d74e9d4ab751ee967
NIST National Vulnerability Database
github.com/advisories/GHSA-m9jv-gchx-48gv
GitHub Security Advisories
git.kernel.org/stable/c/c65bbfc730df9ebf0fea8e286b0ad2dfab03dbfe
NIST National Vulnerability Database
nvd.nist.gov/vuln/detail/CVE-2026-90382
GitHub Security Advisories
git.kernel.org/stable/c/17d6b89e09eac2d90272fceeba3644e92212e02f
NIST National Vulnerability Database

Elsewhere on this site

Linux
every CVE for this vendor

Related CVEs (same products)

Unknown CVE-2026-98866 sched/cache: Introduce task_struct->sched_cache_grp to fix UAF 1d
Unknown CVE-2026-98867 dm-pcache: bound the logical key offset from persistent memory 1d
Unknown CVE-2026-98868 dm-pcache: reject a kset that overruns its segment 1d
Unknown CVE-2026-98856 kprobes: Skip disarmed probes when checking optkprobe overlap 1d
Unknown CVE-2026-98857 ipvs: bound LBLCR and LBLC cache growth 1d
Unknown CVE-2026-98858 io_uring: fix task_work add use-after-free with SQPOLL 1d

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

No CVSS score published by NVD, the CNA, CISA or GitHub so far.
No fixed version, patch or mitigation documented.
No CISA SSVC assessment.
No CWE classification.
No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2026-90382 is "wifi: mt76: mt76x02: do not WARN on invalid rx descriptor length", rated Unknown. It affects Linux (Linux); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. EPSS 0.21% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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