vulntracker.iovulntracker.io
© 2026 vulntracker.io

CVE-2026-90344

wifi: mac80211: disconnect on CSA to channel 0

N/A
Published: September 17, 2026 at 04:08 PM UTC
Updated: October 19, 2026 at 09:19 AM UTC
1 product affected across 1 vendorLinux Kernel

Using Linux by Linux?

Get instant alerts when new vulnerabilities affect Linux - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Start FreeSign In
Severity
N/A
Exploit prediction
EPSS 0.2%

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: disconnect on CSA to channel 0 The refactor for the CSA parsing erroneously equates channel zero and no information present, leading it to ignore a CSA on an AP that advertises a switch to that (invalid) channel. This leads to not disconnecting, which we should. For Intel devices, this can lead to a firmware crash. Fix this by using an int type for the channel number as well as the opclass, and using a (negative) value that cannot be encoded in the element to indicate it's not present.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
90%
21c3f8f95554feff9bed15703e89adbe582e03836.9
Vendor states this is fixed in 099aadb2012d7490bc584cc5075ef11cbc33f2c3 (fixed)
Vendor states this is fixed in cf57f0a674cc3e3cda1a789359cc1238b61b9d7d (fixed)
Vendor states this is fixed in e7bc5ab93acd1c3f54feeb9fa19ead3530168090 (fixed)
Vendor states this is fixed in eef374088450bb91626e133c7172b8a0e969a522 (fixed)
Vendor states this is fixed in 6.12.110 (unaffected)
Vendor states this is fixed in 6.18.52 (unaffected)
Vendor states this is fixed in 6.9 (unaffected)
Vendor states this is fixed in 7.2.6 (unaffected)
Vendor states this is fixed in 7.3 (unaffected)
Vendor states this is fixed in 7.3-rc1 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (4)

Source: cverecord
https://git.kernel.org/stable/c/099aadb2012d7490bc584cc5075ef11cbc33f2c3
Source: cverecord
https://git.kernel.org/stable/c/e7bc5ab93acd1c3f54feeb9fa19ead3530168090
Source: cverecord
https://git.kernel.org/stable/c/eef374088450bb91626e133c7172b8a0e969a522
Source: cverecord
https://git.kernel.org/stable/c/cf57f0a674cc3e3cda1a789359cc1238b61b9d7d

Quick Info

StatusRECEIVED

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create accountSign in
Free plan, no card