CVE-2024-42250
Apache Linux Kernel RCU Lock Bypass Vulnerability
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.
INFO
Published Date :
Aug. 7, 2024, 4:15 p.m.
Last Modified :
Aug. 8, 2024, 8:55 p.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
3.6
Exploitability Score :
1.8
References to Advisories, Solutions, and Tools
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CVE-2024-42250.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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The following list is the news that have been mention
CVE-2024-42250 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2024-42250 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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Initial Analysis by [email protected]
Aug. 08, 2024
Action Type Old Value New Value Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://git.kernel.org/stable/c/6bb6bd3dd6f382dfd36220d4b210a0c77c066651 No Types Assigned https://git.kernel.org/stable/c/6bb6bd3dd6f382dfd36220d4b210a0c77c066651 Patch Changed Reference Type https://git.kernel.org/stable/c/8eadcab7f3dd809edbe5ae20533ff843dfea3a07 No Types Assigned https://git.kernel.org/stable/c/8eadcab7f3dd809edbe5ae20533ff843dfea3a07 Patch Changed Reference Type https://git.kernel.org/stable/c/97cfd5e20ddc2e33e16ce369626ce76c9a475fd7 No Types Assigned https://git.kernel.org/stable/c/97cfd5e20ddc2e33e16ce369626ce76c9a475fd7 Patch Changed Reference Type https://git.kernel.org/stable/c/cf5bb09e742a9cf6349127e868329a8f69b7a014 No Types Assigned https://git.kernel.org/stable/c/cf5bb09e742a9cf6349127e868329a8f69b7a014 Patch Added CWE NIST CWE-667 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.8 up to (excluding) 6.9.10 -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 07, 2024
Action Type Old Value New Value Added 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. Added Reference kernel.org https://git.kernel.org/stable/c/97cfd5e20ddc2e33e16ce369626ce76c9a475fd7 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/6bb6bd3dd6f382dfd36220d4b210a0c77c066651 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/8eadcab7f3dd809edbe5ae20533ff843dfea3a07 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/cf5bb09e742a9cf6349127e868329a8f69b7a014 [No types assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2024-42250 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2024-42250
weaknesses.