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NVD / CVE Program· CNA Linux

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

Noroxi assessment

Priority: Monitor (action score 0/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.21% (FIRST EPSS).
  • Fixed version: Linux Linux 17d6b89e09eac2d90272fceeba3644e92212e02f, 2d31e332c13b1db7745a7bd9cf74bc105524bcac, 61b1f6d92249bc34580ff19de7c69c805f82adca.

Low priority for now. Upgrade to Linux Linux 17d6b89e09eac2d90272fceeba3644e92212e02f, 2d31e332c13b1db7745a7bd9cf74bc105524bcac, 61b1f6d92249bc34580ff19de7c69c805f82adca or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

—No exploit Fix available
Published
Sep 17, 2026
Updated
Oct 19, 2026
EPSS
0.2% · 12th percentile
CWE
—

Report tools

JSON

Action score

0

Monitor

Low priority for now.

CVSS
0 / 40 · —
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

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  • A fix has been released

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 4.16affected
    • 7bc04215a66b60e198aecaee8418f6d79fa19faa and later · before 61b1f6d92249bc34580ff19de7c69c805f82adcaaffected · git
    • 7bc04215a66b60e198aecaee8418f6d79fa19faa and later · before c65bbfc730df9ebf0fea8e286b0ad2dfab03dbfeaffected · git
    • 7bc04215a66b60e198aecaee8418f6d79fa19faa and later · before d55e7aede542c4c76ead82d37d0c112f21eb2ac2affected · git
    • 7bc04215a66b60e198aecaee8418f6d79fa19faa and later · before b6e7958602bd1acdb8ae92703b6689a28bcc9bc0affected · git
    • 7bc04215a66b60e198aecaee8418f6d79fa19faa and later · before 2d31e332c13b1db7745a7bd9cf74bc105524bcacaffected · git
    • 7bc04215a66b60e198aecaee8418f6d79fa19faa and later · before 17d6b89e09eac2d90272fceeba3644e92212e02faffected · git
    • 7bc04215a66b60e198aecaee8418f6d79fa19faa and later · before 6def491fe9c4e83aa8cba62d74e9d4ab751ee967affected · git
    • 7bc04215a66b60e198aecaee8418f6d79fa19faa and later · before 81497634d9f872fd3e8b03aada55574afff6f174affected · git
    • before 4.16not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.190-16.1.190-1
Debian:12linux-6.12before 6.12.111-1~deb12u16.12.111-1~deb12u1
Debian:13linuxbefore 6.12.111-16.12.111-1
Debian:14linuxbefore 7.2.6-17.2.6-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2026-90380Sep 17, 2026 · wifi: mt76: mt792x: fix use-after-free in mt76_rx_poll_complete
    35Monitor
  • ← EarlierCVE-2026-90381Sep 17, 2026 · wifi: mt76: fix handling channel context with different bands in mt76_switch_vif_chanctx()
    35Monitor
  • Later →CVE-2026-90383Sep 17, 2026 · misc: sgi-gru: remove interrupt-context page-table walks
    31Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux17d6b89e09eac2d90272fceeba3644e92212e02fVendor (CNA)
Linux Linux2d31e332c13b1db7745a7bd9cf74bc105524bcacVendor (CNA)
Linux Linux61b1f6d92249bc34580ff19de7c69c805f82adcaVendor (CNA)
Linux Linux6def491fe9c4e83aa8cba62d74e9d4ab751ee967Vendor (CNA)
Linux Linux81497634d9f872fd3e8b03aada55574afff6f174Vendor (CNA)
Linux Linuxb6e7958602bd1acdb8ae92703b6689a28bcc9bc0Vendor (CNA)
Linux Linuxc65bbfc730df9ebf0fea8e286b0ad2dfab03dbfeVendor (CNA)
Linux Linuxd55e7aede542c4c76ead82d37d0c112f21eb2ac2Vendor (CNA)
debian:linux6.1.190-1 · Debian:12Package registry (OSV)
debian:linux6.12.111-1 · Debian:13Package registry (OSV)
debian:linux-6.126.12.111-1~deb12u1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

No CVSS vector for this record, so attack conditions can't be derived.

Weakness class (CWE)

—

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

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References

Show all references (7 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records