Multiple Linux kernel flaws in Ubuntu versions
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Ubuntu Linux kernel contains multiple vulnerabilities enabling arbitrary code execution, privilege escalation, and remote denial of service.
CERT-FR has published an advisory documenting multiple vulnerabilities in the Ubuntu Linux kernel affecting versions 14.04 ESM through 26.04 LTS. These vulnerabilities expose systems to several attack vectors including arbitrary code execution, privilege elevation, remote denial of service, data integrity compromise, and security policy bypass. Ubuntu has released a series of security bulletins (USN-8819-1 through USN-8864-1) with patches addressing these issues across different kernel versions and release branches. Affected organizations running Ubuntu systems should apply the relevant patches from the corresponding security notices as soon as possible.
Mentioned in this report
Source reporting: https://www.cert.ssi.gouv.fr/avis/CERTFR-2026-AVI-1252
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