CVE-2022-48874
Linux Kernel fastrpc Use After Free and Race Condition Vulnerability
Description
In the Linux kernel, the following vulnerability has been resolved: misc: fastrpc: Fix use-after-free and race in fastrpc_map_find Currently, there is a race window between the point when the mutex is unlocked in fastrpc_map_lookup and the reference count increasing (fastrpc_map_get) in fastrpc_map_find, which can also lead to use-after-free. So lets merge fastrpc_map_find into fastrpc_map_lookup which allows us to both protect the maps list by also taking the &fl->lock spinlock and the reference count, since the spinlock will be released only after. Add take_ref argument to make this suitable for all callers.
INFO
Published Date :
Aug. 21, 2024, 7:15 a.m.
Last Modified :
Aug. 29, 2024, 2:42 a.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
5.9
Exploitability Score :
1.8
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2022-48874.
| URL | Resource |
|---|---|
| https://git.kernel.org/stable/c/9446fa1683a7e3937d9970248ced427c1983a1c5 | Patch |
| https://git.kernel.org/stable/c/a50c5c25b6e7d2824698c0e6385f882a18f4a498 | Patch |
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).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2022-48874 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2022-48874 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. 29, 2024
Action Type Old Value New Value Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://git.kernel.org/stable/c/9446fa1683a7e3937d9970248ced427c1983a1c5 No Types Assigned https://git.kernel.org/stable/c/9446fa1683a7e3937d9970248ced427c1983a1c5 Patch Changed Reference Type https://git.kernel.org/stable/c/a50c5c25b6e7d2824698c0e6385f882a18f4a498 No Types Assigned https://git.kernel.org/stable/c/a50c5c25b6e7d2824698c0e6385f882a18f4a498 Patch Added CWE NIST CWE-416 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.18 up to (excluding) 6.1.8 -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 21, 2024
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: misc: fastrpc: Fix use-after-free and race in fastrpc_map_find Currently, there is a race window between the point when the mutex is unlocked in fastrpc_map_lookup and the reference count increasing (fastrpc_map_get) in fastrpc_map_find, which can also lead to use-after-free. So lets merge fastrpc_map_find into fastrpc_map_lookup which allows us to both protect the maps list by also taking the &fl->lock spinlock and the reference count, since the spinlock will be released only after. Add take_ref argument to make this suitable for all callers. Added Reference kernel.org https://git.kernel.org/stable/c/a50c5c25b6e7d2824698c0e6385f882a18f4a498 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/9446fa1683a7e3937d9970248ced427c1983a1c5 [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-2022-48874 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-2022-48874
weaknesses.