CVE-2024-42250

medium

Description

In the Linux kernel, the following vulnerability has been resolved: cachefiles: add missing lock protection when polling Add missing lock protection in poll routine when iterating xarray, otherwise: Even with RCU read lock held, only the slot of the radix tree is ensured to be pinned there, while the data structure (e.g. struct cachefiles_req) stored in the slot has no such guarantee. The poll routine will iterate the radix tree and dereference cachefiles_req accordingly. Thus RCU read lock is not adequate in this case and spinlock is needed here.

References

https://git.kernel.org/stable/c/cf5bb09e742a9cf6349127e868329a8f69b7a014

https://git.kernel.org/stable/c/97cfd5e20ddc2e33e16ce369626ce76c9a475fd7

https://git.kernel.org/stable/c/8eadcab7f3dd809edbe5ae20533ff843dfea3a07

https://git.kernel.org/stable/c/6bb6bd3dd6f382dfd36220d4b210a0c77c066651

Details

Source: Mitre, NVD

Published: 2024-08-07

Updated: 2024-08-08

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