Debian Linux Kernel Multiple Vulnerabilities

CSIRTS triage

What

Multiple vulnerabilities exist in the Debian Linux Kernel.

Who is affected

Deployments of Debian Linux Kernel.

Urgency

Remediation urgency is unclear due to lack of specific details.

Action

Monitor for updates from Debian.

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

Details

Source

HKCERT Security Bulletins (HK · national-cert · site)

Severity

unknown

Published

2026-07-06

Exploitation

Not in CISA KEV at last sync

Original advisory: https://www.hkcert.org/security-bulletin/debian-linux-kernel-multiple-vulnerabilities_20260706

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-2021-471880.23% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 13% of all scored CVEs.
• Low exploitation riskCVE-2021-472110.22% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 13% of all scored CVEs.
• Low exploitation riskCVE-2022-487030.23% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 14% of all scored CVEs.
• Low exploitation riskCVE-2022-491350.25% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 16% of all scored CVEs.
• Low exploitation riskCVE-2022-491580.25% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 16% of all scored CVEs.
• Low exploitation riskCVE-2022-491830.25% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 16% of all scored CVEs.
• Low exploitation riskCVE-2022-498220.17% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 6% of all scored CVEs.
• Low exploitation riskCVE-2022-500730.16% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 5% of all scored CVEs.
• Low exploitation riskCVE-2022-504720.15% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 4% of all scored CVEs.
• Low exploitation riskCVE-2022-504930.14% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 4% of all scored CVEs.

Referenced CVEs

+12 more CVEs referenced in this advisory.

Same CVEs, other sources

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

• high[UPDATE] [high] Linux Kernel: Multiple vulnerabilitiescert-bund
• high[UPDATE] [high] Linux Kernel: Multiple vulnerabilitiescert-bund
• high[UPDATE] [high] Linux Kernel: Multiple vulnerabilitiescert-bund
• medium[UPDATE] [medium] Linux Kernel: Multiple vulnerabilities allow Denial of Servicecert-bund
• medium[UPDATE] [medium] Linux Kernel: Multiple vulnerabilitiescert-bund
• high[UPDATE] [high] Linux Kernel: Multiple Vulnerabilitiescert-bund
• medium[UPDATE] [medium] Linux Kernel: Multiple vulnerabilitiescert-bund
• high[UPDATE] [high] Linux Kernel: Multiple vulnerabilitiescert-bund
• high[UPDATE] [high] Linux Kernel: Multiple Vulnerabilitiescert-bund
• medium[UPDATE] [medium] Linux Kernel: Multiple Vulnerabilitiescert-bund
• medium[UPDATE] [medium] Linux Kernel: Multiple Vulnerabilitiescert-bund
• medium[UPDATE] [medium] Linux Kernel: Multiple Vulnerabilitiescert-bund

Recent advisories for Debian 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.

• unknownMultiple vulnerabilities in Debian LTS Linux kernel (July 10, 2026)cert-fr-avis · 2026-07-10
• unknownDebian Linux Kernel Multiple Vulnerabilitieshkcert · 2026-06-30
• unknownMultiple vulnerabilities in the Debian Linux kernel (June 26, 2026)cert-fr-avis · 2026-06-26

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