CVE-2024-42250

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.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/6bb6bd3dd6f382dfd36220d4b210a0c77c066651	Patch
https://git.kernel.org/stable/c/8eadcab7f3dd809edbe5ae20533ff843dfea3a07	Patch
https://git.kernel.org/stable/c/97cfd5e20ddc2e33e16ce369626ce76c9a475fd7	Patch
https://git.kernel.org/stable/c/cf5bb09e742a9cf6349127e868329a8f69b7a014	Patch

Configurations

Configuration 1 (hide)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2024-08-07 16:15

Updated : 2024-08-08 20:55

NVD link : CVE-2024-42250

Mitre link : CVE-2024-42250

CVE.ORG link : CVE-2024-42250

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-667

Improper Locking

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