CVE-2026-80616: Linux kernel · ieee802154: Avoid calling WARN_ON() on -ENOMEM in cfg802154_switch_netns()
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 12% 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 28 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 fix is available that removes the pointless WARN_ON() calls on -ENOMEM in the affected functions. Users should update to a patched linux-azure kernel version that includes this fix. Specific patched versions are not explicitly stated here, but affected versions are enumerated, implying later versions contain the fix. Check the vendor or Linux kernel advisory for the exact fixed versions and apply updates accordingly.
Description
A vulnerability in the Linux kernel's ieee802154 subsystem was resolved to avoid calling WARN_ON() on an -ENOMEM error in the cfg802154_switch_netns() function. The issue involves pointless WARN_ON() calls during allocation failures in dev_change_net_namespace() and device_rename(), which lead to unnecessary kernel warnings caused by deliberate fault injections. The vulnerability was identified by the Linux Verification Center using Syzkaller. Multiple specific linux-azure kernel versions are affected.
References
- nvd.nist.gov/vuln/detail/CVE-2026-80616 (opens in a new tab)
- git.kernel.org/stable/c/0569f67ed6a7af838e2141da93c68e6b6013f483 (opens in a new tab)
- git.kernel.org/stable/c/6fcba77571c53f656a2f109259601a7570d4c74a (opens in a new tab)
- git.kernel.org/stable/c/f4860dd988b1041d70595f2ed84de80f90cb7ebc (opens in a new tab)
- ubuntu.com/security/CVE-2026-80616 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-80616 (opens in a new tab)
- git.kernel.org/linus/0569f67ed6a7af838e2141da93c68e6b6013f483 (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)
- git.kernel.org/stable/c/c67e70202cfd602f86d3e59fe6fffecaf4110f40 (opens in a new tab)
- git.kernel.org/stable/c/f300e68014cf10af9aa0c0ad958750a8509c8e44 (opens in a new tab)