CVE-2026-80629: octeontx2-af: npc: Fix size of entry2cntr_map

mediumCVSS 5.5CVE-2026-80629

CSIRTS triage

vendor: Linux product: Linux Kernel Memory corruption

What: The Octeon TX2 ARM network packet classifier contains an incorrect size definition for entry2cntr_map, potentially causing buffer overflow.
Who is affected: Systems running Octeon TX2 ARM processors with the AF (Application Firmware) driver enabled.
Urgency: Medium severity (CVSS 5.5); should be patched in routine updates to prevent memory corruption.
Action: Apply kernel security patch addressing CVE-2026-80629 when available from your distribution.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source: Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity: medium — CVSS 5.5
Published: 2026-08-11
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-80629

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-806290.17% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 6% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-80629	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

Recent advisories for octeontx2-af

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

unknownCVE-2026-80629: In the Linux kernel, the following vulnerability has been resolved: octeontx2-af: npc: Fix siz…nvd · 2026-08-28
highCVE-2026-74527: In the Linux kernel, the following vulnerability has been resolved: octeontx2-af: Block VFs fr…nvd · 2026-08-15
highCVE-2026-72410: In the Linux kernel, the following vulnerability has been resolved: octeontx2-af: Validate NIX…nvd · 2026-08-15
highCVE-2026-72312: In the Linux kernel, the following vulnerability has been resolved: octeontx2-af: fix VF bring…nvd · 2026-08-15
unknownCVE-2026-72050: In the Linux kernel, the following vulnerability has been resolved: octeontx2-af: Free BPID bi…nvd · 2026-08-15
highCVE-2026-72045: In the Linux kernel, the following vulnerability has been resolved: octeontx2-af: cn10k: restr…nvd · 2026-08-15