CVE-2026-80629: Linux kernel · octeontx2-af: npc: Fix size of entry2cntr_map
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, 14:05 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 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 patch is available and should be applied to affected Linux kernel versions to fix the out-of-bounds write in the octeontx2-af npc subsystem. Users should update to the fixed kernel versions as listed in the advisory. No additional mitigations are indicated by the vendor advisory.
Description
A vulnerability in the Linux kernel's octeontx2-af npc subsystem was resolved, involving an incorrect size allocation for entry2cntr_map leading to a slab-out-of-bounds write detected by KASAN. This flaw was due to allocating a counter for a reserved mcam entry that was not allocated in the map, causing a kernel memory corruption issue. The issue has been fixed in affected Linux kernel versions.
References
- nvd.nist.gov/vuln/detail/CVE-2026-80629 (opens in a new tab)
- git.kernel.org/stable/c/1d072cc3ba4338d6b2acb85d50a3af5cf2b12a3e (opens in a new tab)
- git.kernel.org/stable/c/2477c523c6e69733d51101ae9bd2dfc0a054b13d (opens in a new tab)
- git.kernel.org/stable/c/de8e3a4004c5df9461974352e9d7ff0f8313c508 (opens in a new tab)
- git.kernel.org/stable/c/f9cd6fabe0e7c7f6fc30c6c192c7ed72aba37232 (opens in a new tab)
- ubuntu.com/security/CVE-2026-80629 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-80629 (opens in a new tab)
- git.kernel.org/linus/f9cd6fabe0e7c7f6fc30c6c192c7ed72aba37232 (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)