CVE-2024-47743

KEYS: prevent NULL pointer dereference in find_asymmetric_key()

Description

In the Linux kernel, the following vulnerability has been resolved: KEYS: prevent NULL pointer dereference in find_asymmetric_key() In find_asymmetric_key(), if all NULLs are passed in the id_{0,1,2} arguments, the kernel will first emit WARN but then have an oops because id_2 gets dereferenced anyway. Add the missing id_2 check and move WARN_ON() to the final else branch to avoid duplicate NULL checks. Found by Linux Verification Center (linuxtesting.org) with Svace static analysis tool.

Category

5.5
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.04%
Affected: Linux Linux
Affected: Linux Linux
Published at:
Updated at:

References

Link Tags
https://git.kernel.org/stable/c/3322fa8f2aa40b0b3651034cd541647a600cc6c0 patch
https://git.kernel.org/stable/c/a3765b497a4f5224cb2f7a6a2d3357d3066214ee patch
https://git.kernel.org/stable/c/13b5b401ead95b5d8266f64904086c55b6024900 patch
https://git.kernel.org/stable/c/0d3b0706ada15c333e6f9faf19590ff715e45d1e patch
https://git.kernel.org/stable/c/70fd1966c93bf3bfe3fe6d753eb3d83a76597eef patch

Frequently Asked Questions

What is the severity of CVE-2024-47743?
CVE-2024-47743 has been scored as a medium severity vulnerability.
How to fix CVE-2024-47743?
To fix CVE-2024-47743, 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-2024-47743 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2024-47743 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-2024-47743?
CVE-2024-47743 affects Linux Linux, Linux Linux.
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