Linux kernel (ELF loader): PIE stack buffer corruption, local root

Impact

PIE stack buffer corruption, local root [KEV]

Who can reach it

Local user / tenant process

What to do

Livepatchable; otherwise drain + reboot. Only affects pre-2018 kernels - treat presence as a fleet-hygiene failure

References

Related entries

• Linux i915 GPU kernel driver (execbuffer2 ioctl): The execbuffer2 ioctl accepted a userspace-supplied address withoutCVE-2018-20669 · Linux i915 GPU kernel driver (execbuffer2 ioctl)High
• Intel i915 graphics kernel-mode driver for Linux (< 5.0): Insufficient input validation in the i915 kernel-mode driverCVE-2019-11085 · Intel i915 graphics kernel-mode driver for Linux (< 5.0)High
• Linux kernel (ptrace): Broken permission and object lifetime handling for PTRACE_TRACEME, local rootCVE-2019-13272 · Linux kernel (ptrace)High
• AMD Radeon Kernel Mode driver - Escape 0x2000c00 call handler: A low-privileged attacker can drive the RadeonCVE-2020-12964 · AMD Radeon Kernel Mode driver - Escape 0x2000c00 call handlerHigh
• Linux i915 GPU kernel driver: A use-after-free in the i915 GPU kernel driver. The general shape is that a GPU object isCVE-2020-7053 · Linux i915 GPU kernel driverHigh
• Linux kernel (netfilter x_tables): Heap out-of-bounds write in xt_compat_target_from_user()CVE-2021-22555 · Linux kernel (netfilter x_tables)High