CVE-2026-80634
An attacker can exploit multiple vulnerabilities in Linux Kernel to conduct an unspecified attack, including possibly memory corruption, disclosure or manipulation of data, and denial-of-service conditions.
CSIRTS triage
- What
- Linux Kernel contains multiple vulnerabilities allowing attackers to conduct unspecified attacks including memory corruption, data disclosure, data manipulation, and denial-of-service.
- Who is affected
- Systems running affected Linux Kernel versions across all distributions and architectures.
- Urgency
- High; multiple unpatched kernel vulnerabilities with broad potential impact on system stability and security.
- Action
- Apply kernel security updates addressing CVE-2026-80590 through CVE-2026-80597 from your Linux distribution.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.38% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 31% of all EPSS-scored CVEs.
Advisory coverage (3)
- high[NEW] [high] Linux Kernel: Multiple vulnerabilitiescert-bund · 2026-09-03
- criticalCVE-2026-80634: In the Linux kernel, the following vulnerability has been resolved: netfilter: flowtable: avoi…nvd · 2026-08-28
- lowCVE-2026-80634: netfilter: flowtable: avoid num_encaps underflow on bridge VLAN untagmsrc · 2026-08-11
External references
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