[UPDATE] [medium] Linux Kernel: Multiple Vulnerabilities
A local attacker can exploit multiple vulnerabilities in Linux Kernel to cause a denial of service condition and perform an unspecified attack.
CSIRTS triage
- What
- Multiple kernel vulnerabilities enable local denial of service attacks and unspecified additional attacks.
- Who is affected
- Systems running Linux Kernel versions affected by CVE-2021-46959, CVE-2021-47016, CVE-2021-47020, CVE-2021-47054, CVE-2021-47055, CVE-2021-47056, CVE-2021-47057, and CVE-2021-47058.
- Urgency
- Medium priority; requires local attacker access but affects multiple kernel subsystems.
- Action
- Apply kernel security updates addressing the listed CVEs from your Linux distribution.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2024-0527
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-2021-469590.24% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 16% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2021-470160.22% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 13% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2021-470200.23% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 13% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2021-470540.24% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 15% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2021-470550.20% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 10% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2021-470560.23% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 13% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2021-470570.22% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 13% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2021-470580.25% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 16% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2021-470590.22% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 13% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2021-470600.24% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 15% of all EPSS-scored CVEs.
Referenced CVEs
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
- unknownDebian Linux Kernel Multiple Vulnerabilitieshkcert
Recent advisories for Linux Kernel
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-2026-68480: In the Linux kernel, the following vulnerability has been resolved: x86/bugs: Make Safe-RET ro…nvd · 2026-08-06
- medium[UPDATE] [medium] Linux Kernel: Multiple vulnerabilitiescert-bund · 2026-08-06
- medium[NEW] [medium] Linux Kernel: Multiple Vulnerabilitiescert-bund · 2026-08-06
- high[UPDATE] [high] Linux Kernel: Vulnerability allows privilege escalationcert-bund · 2026-08-06
- high[UPDATE] [high] Linux Kernel: Multiple vulnerabilities enable denial of servicecert-bund · 2026-08-06
- high[UPDATE] [high] Linux Kernel: Multiple vulnerabilitiescert-bund · 2026-08-06
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