CVE-2021-47109
A local attacker can exploit multiple vulnerabilities in the Linux Kernel to cause a Denial-of-Service condition or perform an unspecified attack.
CSIRTS triage
- What
- Multiple vulnerabilities in the Linux Kernel can be exploited by a local attacker to cause Denial of Service.
- Who is affected
- Local deployments of the Linux Kernel are affected by these vulnerabilities.
- Urgency
- Immediate remediation is advised due to the potential for service disruption.
- Action
- Update the Linux Kernel to the latest version to fix these vulnerabilities.
AI-assisted analysis generated from the source advisory — verify against the original.
⚡ Watch CVE-2021-47109
Get an email if CVE-2021-47109 is added to CISA KEV, gains public exploit code, or a new advisory cites it — max one per day, one-click unsubscribe.
Exploitation outlook
- Low exploitation risk0.24% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 15% of all EPSS-scored CVEs.
Advisory coverage (1)
- medium[UPDATE] [medium] Linux Kernel: Multiple vulnerabilities allow Denial of Servicecert-bund · 2026-07-16
External references
Embed the live status
— this badge updates automatically when the KEV or exploit status changes. How to embed it →
[](https://www.csirts.com/cve/CVE-2021-47109)