CVE-2026-43042
CSIRTS triage
- What
- A race condition in MPLS platform label pair access requires seqcount synchronization.
- Who is affected
- Systems using MPLS networking in the Linux kernel.
- Urgency
- High severity (CVSS 7.1) race condition; urgent patching recommended.
- Action
- Update to the latest kernel version containing the MPLS seqcount synchronization fix.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.11% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 1% of all EPSS-scored CVEs.
Advisory coverage (1)
- highCVE-2026-43042: mpls: add seqcount to protect the platform_label{,s} pairmsrc · 2026-08-06
External references
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