Multiple vulnerabilities in Debian Linux kernel LTS
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Multiple flaws in Debian 11 kernel allow privilege escalation, data disclosure, and denial of service; patches available.
CERT-FR has disclosed multiple vulnerabilities affecting the Linux kernel in Debian 11 (bullseye) versions prior to 6.1.177-1~deb11u1. The flaws enable local attackers to achieve privilege escalation, breach data confidentiality, and trigger denial-of-service conditions. This is a routine security advisory from Debian's LTS support channel announcing kernel patches. Administrators running Debian 11 should apply the kernel update to version 6.1.177-1~deb11u1 or later. The advisory does not indicate active exploitation in the wild; this is a preventive patch cycle.
Mentioned in this report
Source reporting: https://www.cert.ssi.gouv.fr/avis/CERTFR-2026-AVI-0957
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