CVE-2024-40944

x86/kexec: Fix bug with call depth tracking

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. ]

N/A

CVSS

Severity:

EPSS 0.08%

Affected: Linux Linux

References

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

Frequently Asked Questions

What is the severity of CVE-2024-40944?: CVE-2024-40944 has not yet been assigned a CVSS score.
How to fix CVE-2024-40944?: To fix CVE-2024-40944, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2024-40944 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2024-40944 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2024-40944?: CVE-2024-40944 affects Linux Linux, Linux Linux.

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