DSA-6477-1 linux - security update
Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks. https://security-tracker.debian.org/tracker/DSA-6477-1
CSIRTS triage
- What
- Multiple vulnerabilities in the Linux kernel permit privilege escalation, denial of service, and information disclosure attacks.
- Who is affected
- Debian systems running affected kernel versions.
- Urgency
- High; multiple privilege escalation and information disclosure vulnerabilities warrant timely remediation despite no current evidence of active exploitation.
- Action
- Apply the Debian security update DSA-6477-1 to the Linux kernel package.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://lists.debian.org/debian-security-announce/2026/msg00388.html
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-2025-400740.41% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 34% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-642160.46% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 38% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-645810.12% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 2% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-746260.50% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 41% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-746530.17% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 6% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-746620.51% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 42% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-805360.14% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 4% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-805570.52% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 42% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-805620.18% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 7% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-805720.12% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 2% of all EPSS-scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2025-40074 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-64216 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-64581 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-74626 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-74653 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-74662 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-80536 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-80557 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-80562 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-80572 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-80583 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-80590 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-80725 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
- high[NEW] [high] Linux Kernel: Multiple vulnerabilitiescert-bund
- medium[NEW] [medium] Linux Kernel: Multiple vulnerabilities allow unspecified attackcert-bund
- medium[NEW] [medium] Linux Kernel: Multiple vulnerabilitiescert-bund
- medium[NEW] [medium] Linux Kernel: Vulnerability allows Denial of Servicecert-bund
- high[UPDATE] [high] Linux Kernel: Multiple vulnerabilitiescert-bund
- high[NEW] [high] Linux Kernel: Multiple vulnerabilitiescert-bund
- medium[UPDATE] [medium] Linux Kernel: Multiple vulnerabilitiescert-bund
- unknownCVE-2026-80725: In the Linux kernel, the following vulnerability has been resolved: net: gro: properly validat…nvd
- highCVE-2026-80590: In the Linux kernel, the following vulnerability has been resolved: inet: frags: strip GSO sta…nvd
- highCVE-2026-80583: In the Linux kernel, the following vulnerability has been resolved: ASoC: codecs: lpass-tx-mac…nvd
- highCVE-2026-80572: In the Linux kernel, the following vulnerability has been resolved: Input: byd - synchronize t…nvd
- unknownCVE-2026-80562: In the Linux kernel, the following vulnerability has been resolved: gpio: ml-ioh: use raw_spin…nvd
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