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15-Year-Old GhostLock Flaw Enables Root and Container Escape on Most Linux Distros

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15-Year-Old GhostLock Flaw Enables Root and Container Escape on Most Linux Distros

Researchers at Nebula Security disclosed GhostLock (CVE-2026-43499), a Linux kernel vulnerability present in the codebase since 2011 that affects most mainstream distributions. The flaw allows any logged-in user to gain root privileges without requiring special permissions, unusual configurations, or network access.

Why it matters: System administrators and Linux users need to prioritize patching immediately, as any authenticated local user can escalate to root on vulnerable systems, exposing all data and systems to compromise.

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vulnerabilities

15-Year-Old GhostLock Flaw Enables Root and Container Escape on Most Linux Distros

Researchers at Nebula Security disclosed GhostLock (CVE-2026-43499), a Linux kernel vulnerability present in the codebase since 2011 that affects most mainstream distributions. The flaw allows any logged-in user to gain root privileges without requiring special permissions, unusual configurations, or network access.

Why it matters: System administrators and Linux users need to prioritize patching immediately, as any authenticated local user can escalate to root on vulnerable systems, exposing all data and systems to compromise.

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