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PoC and Technical Details Released for Linux Kernel Privilege Escalation Vulnerability

Cyber Press
Cyber Press
Published July 9, 2026Original Report

Excerpt

A researcher has published proof-of-concept exploit code and a full technical breakdown of a Linux kernel vulnerability that lets any logged-in desktop user escalate to root, requiring no special privileges, no container escape, and no setuid helper. The flaw, tracked as CVE-2026-46215 , lives in the Direct Rendering Manager (DRM) Graphics Execution Manager (GEM) subsystem and stems from a use-after-free triggered by a race condition in a relatively new ioctl. Linux Kernel…

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Attack Flow6 steps · MITRE ATT&CK mapped

Initial AccessTA0001T1190
1/6
Exploit Public-Facing Application
ActionAccess vulnerable ioctl
An unprivileged user accesses a vulnerable ioctl via the render node (/dev/dri/renderD*).

Indicators of Compromise

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1 indicators

TypeIndicatorConfidenceScoreFirst Seen
CVECVE-2026-46215MediumScore 51/100First seen

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