cve 2026 46215

CVE-2026-46215 is a reported Linux kernel local privilege-escalation vulnerability involving the DRM Graphics Execution Manager. The cve 2026 46215 tag follows coverage of the affected DRM_IOCTL_GEM_CHANGE_HANDLE operation, which may allow local code to elevate from an ordinary account to root when it is present and reachable through a DRM render node. Discussion focuses on checking whether a running kernel is covered by a vendor advisory and whether /dev/dri/renderD* is exposed to untrusted users or workloads. The available report does not identify fixed distribution packages, affected distributions, or a corrected released kernel, so administrators should verify current vendor guidance before assessing risk.