# Multiple Linux kernel flaws in Debian 12 LTS

Published: 2026-07-24 · Severity: high
Canonical: https://vorant.io/reports/a6f787ef-d2f2-5dbe-be0c-c4328d967bcf/multiple-linux-kernel-flaws-in-debian-12-lts

> Debian 12 LTS kernel below 6.1.177-1 contains multiple vulnerabilities allowing privilege escalation and data compromise.

CERT-FR has issued an advisory on multiple vulnerabilities discovered in the Linux kernel shipped with Debian 12 (bookworm) LTS. These flaws affect kernel versions prior to 6.1.177-1 and expose systems to several attack vectors including privilege escalation, confidentiality and integrity breaches, and denial of service. An attacker with local access could exploit these issues to gain elevated privileges or compromise sensitive data on affected systems.

The advisory references 17 distinct CVE identifiers spanning vulnerabilities from 2025 and 2026. Debian has released patched kernel versions addressing these issues, and the advisory directs administrators to apply the corresponding security updates from the Debian LTS repository. Organizations running Debian 12 bookworm should prioritize testing and deployment of kernel version 6.1.177-1 or later.

## Mentioned in this report

- Vulnerabilities: CVE-2025-23131, CVE-2026-23272, CVE-2026-23278, CVE-2026-23302, CVE-2026-31451, CVE-2026-46252, CVE-2026-52928, CVE-2026-53138, CVE-2026-53139, CVE-2026-53157, CVE-2026-53158, CVE-2026-53163, CVE-2026-53167, CVE-2026-53325, CVE-2026-53327, CVE-2026-53359, CVE-2026-53362 (KEV), CVE-2026-53366

Source reporting: https://www.cert.ssi.gouv.fr/avis/CERTFR-2026-AVI-0929

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