CVE-2024-47743

medium

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.

References

https://git.kernel.org/stable/c/a3765b497a4f5224cb2f7a6a2d3357d3066214ee

https://git.kernel.org/stable/c/70fd1966c93bf3bfe3fe6d753eb3d83a76597eef

https://git.kernel.org/stable/c/3322fa8f2aa40b0b3651034cd541647a600cc6c0

https://git.kernel.org/stable/c/13b5b401ead95b5d8266f64904086c55b6024900

https://git.kernel.org/stable/c/0d3b0706ada15c333e6f9faf19590ff715e45d1e

Details

Source: Mitre, NVD

Published: 2024-10-21

Updated: 2024-10-22

Risk Information

CVSS v2

Base Score: 4.6

Vector: CVSS2#AV:L/AC:L/Au:S/C:N/I:N/A:C

Severity: Medium

CVSS v3

Base Score: 5.5

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Severity: Medium