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CVE-2022-48874

7.8 · HIGH

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 mut…

Published Aug 21, 2024CWE-416EPSS 0.23%

Overview

CVE-2022-48874 is a high-severity vulnerability. It was published on August 21, 2024 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/9446fa1683a7e3937d9970248ced427c1983a1c5Refgit.kernel.org/stable/c/a50c5c25b6e7d2824698c0e6385f882a18f4a498

How CyberStrike helps

Frequently asked questions

What is CVE-2022-48874?

CVE-2022-48874 is a high-severity vulnerability. It was published on August 21, 2024 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2022-48874?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2022-48874?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2022-48874?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-48874 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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