CVE-2024-26946

kprobes/x86: Use copy_from_kernel_nofault() to read from unsafe address

Description

In the Linux kernel, the following vulnerability has been resolved: kprobes/x86: Use copy_from_kernel_nofault() to read from unsafe address Read from an unsafe address with copy_from_kernel_nofault() in arch_adjust_kprobe_addr() because this function is used before checking the address is in text or not. Syzcaller bot found a bug and reported the case if user specifies inaccessible data area, arch_adjust_kprobe_addr() will cause a kernel panic. [ mingo: Clarified the comment. ]

N/A

CVSS

Severity:

EPSS 0.14%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/6417684315087904fffe8966d27ca74398c57dd6
https://git.kernel.org/stable/c/f13edd1871d4fb4ab829aff629d47914e251bae3
https://git.kernel.org/stable/c/20fdb21eabaeb8f78f8f701f56d14ea0836ec861
https://git.kernel.org/stable/c/b69f577308f1070004cafac106dd1a44099e5483
https://git.kernel.org/stable/c/4e51653d5d871f40f1bd5cf95cc7f2d8b33d063b

Frequently Asked Questions

What is the severity of CVE-2024-26946?: CVE-2024-26946 has not yet been assigned a CVSS score.
How to fix CVE-2024-26946?: To fix CVE-2024-26946, 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-2024-26946 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2024-26946 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-2024-26946?: CVE-2024-26946 affects Linux Linux, Linux Linux.

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