CVE-2026-74366: Linux kernel · wifi: ath12k: fix NULL deref in change_sta_links for unready link
Affects Linux kernelSource GCVE Database
Not known to be exploited · fixed in 7.0.0-1014.14~24.04.1 : update Linux kernel when convenient.
Data as of 26 Oct 2026, 17:16 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 10% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 7.0.0-1014.14~24.04.1, 7.0.0-1017.17~24.04.1, 7.0.0-1016.16~24.04.1 +11
Exploitation evidence
Disclosed: evidence found.
CVE published 15 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.04 LTSlinuxpkg:deb/ubuntu/linux?arch=source&distro=resoluteOther threats | Affected
| Fixed in
|
Ubuntu 26.04 LTSlinux-awspkg:deb/ubuntu/linux-aws?arch=source&distro=resoluteOther threats | Affected
| Fixed in
|
Ubuntu 26.04 LTSlinux-azurepkg:deb/ubuntu/linux-azure?arch=source&distro=resoluteOther threats | Affected
| Fixed in
|
Ubuntu 26.04 LTSlinux-azure-fdepkg:deb/ubuntu/linux-azure-fde?arch=source&distro=resoluteOther threats | Affected
| Fixed in
|
Ubuntu 26.04 LTSlinux-gcppkg:deb/ubuntu/linux-gcp?arch=source&distro=resoluteOther threats | Affected
| Fixed in
|
Ubuntu 26.04 LTSlinux-gkepkg:deb/ubuntu/linux-gke?arch=source&distro=resoluteOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
A patch is available that fixes the issue by adding proper checks before accessing link data structures. Users should apply the official Linux kernel updates that include this fix. The vendor advisory confirms the availability of a fix. No additional mitigation steps are indicated or required beyond applying the patch.
Description
A NULL pointer dereference vulnerability in the Linux kernel's ath12k wireless driver was fixed. The flaw occurs when the driver attempts to change station links for an unready link, leading to a crash due to dereferencing a NULL pointer. This happens because the driver does not properly check if a virtual device was created before accessing related data structures. The issue was resolved by adding a check to prevent broken links from entering internal data structures, thus avoiding the NULL dereference. Multiple specific kernel versions are affected, and a patch is available.
References
- nvd.nist.gov/vuln/detail/CVE-2026-74366 (opens in a new tab)
- git.kernel.org/stable/c/47809a7c8348bc4a332ccc26a37c7145a5f609f8 (opens in a new tab)
- git.kernel.org/stable/c/5f5be2aa3b6d730c51dd4f8b432f2ad72823e63f (opens in a new tab)
- git.kernel.org/stable/c/cfcea221db933295bf2cd75a7f80d441c7a51e28 (opens in a new tab)
- ubuntu.com/security/CVE-2026-74366 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-74366 (opens in a new tab)
- git.kernel.org/linus/47809a7c8348bc4a332ccc26a37c7145a5f609f8 (opens in a new tab)
- ubuntu.com/security/notices/USN-8888-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8889-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8887-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8888-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-8887-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-8887-3 (opens in a new tab)