# Multiple Linux kernel vulnerabilities in Debian trixie

Published: 2026-07-24 · Severity: routine
Canonical: https://vorant.io/reports/e46e2632-ecd6-529b-a807-3633c6aaa2c1/multiple-linux-kernel-vulnerabilities-in-debian-trixie

> Multiple Linux kernel flaws in Debian trixie before 6.12.96-1 allow privilege escalation, data theft, and denial of service.

CERT-FR has published an advisory documenting multiple vulnerabilities in the Linux kernel shipped with Debian trixie (the testing distribution). The affected versions are those prior to 6.12.96-1. These flaws collectively enable attackers to achieve privilege escalation, compromise data confidentiality and integrity, and cause denial of service. The advisory does not provide details on exploitation status or real-world activity, but identifies eleven CVE identifiers spanning 2025 and 2026 year designations. Defenders running Debian trixie should apply the security update detailed in the referenced Debian security bulletin immediately.

## Mentioned in this report

- Vulnerabilities: CVE-2025-21807, CVE-2026-46093, CVE-2026-53027, CVE-2026-53226, CVE-2026-53392, CVE-2026-53399, CVE-2026-53402, CVE-2026-63815, CVE-2026-63816, CVE-2026-63818, CVE-2026-64187, CVE-2026-64189

Source reporting: https://www.cert.ssi.gouv.fr/avis/CERTFR-2026-AVI-0930

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