CVE-2026-90344

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2026-90344
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90344.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-90344
Downstream
Published
2026-09-17T16:08:54Z
Modified
2026-09-18T03:48:37Z
Summary
wifi: mac80211: disconnect on CSA to channel 0
Details

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.

Database specific 
{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90344.json"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
21c3f8f95554feff9bed15703e89adbe582e0383
Fixed
099aadb2012d7490bc584cc5075ef11cbc33f2c3
Fixed
e7bc5ab93acd1c3f54feeb9fa19ead3530168090
Fixed
eef374088450bb91626e133c7172b8a0e969a522
Fixed
cf57f0a674cc3e3cda1a789359cc1238b61b9d7d

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90344.json"

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
6.9.0
Fixed
6.12.110
Type
ECOSYSTEM
Events
Introduced
6.13.0
Fixed
6.18.52
Type
ECOSYSTEM
Events
Introduced
6.19.0
Fixed
7.2.6

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90344.json"