Multiple vulnerabilities in Debian LTS Linux kernel (August 21, 2026)
Multiple vulnerabilities have been discovered in Debian LTS Linux kernel. They allow an attacker to cause privilege escalation, breach of data confidentiality and denial of service.
CSIRTS triage
- What
- Multiple vulnerabilities in Debian LTS Linux kernel allow privilege escalation, data confidentiality breach, and denial of service.
- Who is affected
- Debian LTS systems running affected kernel versions.
- Urgency
- Privilege escalation capability present; high priority for kernel updates.
- Action
- Apply Debian LTS security updates for the kernel addressing CVE-2026-68116, CVE-2026-68147, CVE-2026-68343, CVE-2026-68450, CVE-2026-68271, CVE-2026-64561, CVE-2026-72051, and CVE-2026-68416.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://www.cert.ssi.gouv.fr/avis/CERTFR-2026-AVI-1069/
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-2026-681160.12% 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-2026-681470.14% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 3% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-683430.52% 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-2026-684500.16% 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-2026-682710.18% 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-2026-645610.12% 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-2026-720510.16% 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-2026-684160.16% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 5% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-681930.20% 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-2026-683880.52% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 42% of all EPSS-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[NEW] [high] Linux Kernel: Multiple vulnerabilitiescert-bund
- high[NEW] [high] Linux Kernel: Multiple vulnerabilitiescert-bund
- critical[NEW] [high] Linux Kernel: Multiple vulnerabilitiescert-bund
- unknownMultiple vulnerabilities in SUSE Linux kernel (August 21, 2026)cert-fr-avis
- unknownMultiple vulnerabilities in Red Hat Linux kernel (August 21, 2026)cert-fr-avis
- unknownUSN-8664-1: Linux kernel (NVIDIA BaseOS) vulnerabilitiesubuntu
- unknownUSN-8663-1: Linux kernel (NVIDIA) vulnerabilitiesubuntu
- high[NEW] [high] Linux Kernel: Multiple Vulnerabilities Enable Unspecified Attackcert-bund
- medium[UPDATE] [medium] Linux Kernel: Multiple vulnerabilitiescert-bund
- highCVE-2026-72254: In the Linux kernel, the following vulnerability has been resolved: netfilter: nft_fib: reject…nvd
- highCVE-2026-72183: In the Linux kernel, the following vulnerability has been resolved: landlock: Fix LANDLOCK_SCO…nvd
- criticalCVE-2026-72130: In the Linux kernel, the following vulnerability has been resolved: nvmet-auth: reject short A…nvd
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