CVE-2024-40944

Published: July 16, 2024Last modified: July 16, 2024

Description

In the Linux kernel, the following vulnerability has been resolved: x86/kexec: Fix bug with call depth tracking The call to cc_platform_has() triggers a fault and system crash if call depth tracking is active because the GS segment has been reset by load_segments() and GS_BASE is now 0 but call depth tracking uses per-CPU variables to operate. Call cc_platform_has() earlier in the function when GS is still valid. [ bp: Massage. ]

Status

References

• https://git.kernel.org/stable/c/2cfb464669b645a9b98478b74f2bcea9860dcff1
• https://git.kernel.org/stable/c/93c1800b3799f17375989b0daf76497dd3e80922
• https://git.kernel.org/stable/c/d91ddd05082691e69b30744825d18ae799293258