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CVE-2022-49410

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: tracing: Fix potential double free in create_var_ref() In create_var_ref(), init_var_ref() is called to initialize the fields o…

Published Feb 26, 2025CWE-415EPSS 0.30%

Overview

CVE-2022-49410 is a high-severity vulnerability. It was published on February 26, 2025 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:

tracing: Fix potential double free in create_var_ref()

In create_var_ref(), init_var_ref() is called to initialize the fields

of variable ref_field, which is allocated in the previous function call

to create_hist_field(). Function init_var_ref() allocates the

corresponding fields such as ref_field->system, but frees these fields

when the function encounters an error. The caller later calls

destroy_hist_field() to conduct error handling, which frees the fields

and the variable itself. This results in double free of the fields which

are already freed in the previous function.

Fix this by storing NULL to the corresponding fields when they are freed

in init_var_ref().

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/058cb6d86b9789377216c936506b346aaa1eb581Refgit.kernel.org/stable/c/37443b3508b8cce6832f8d25cb4550b2f7801f50Refgit.kernel.org/stable/c/4fdfb15e08598711dbf50daf56a33965232daf0eRefgit.kernel.org/stable/c/99696a2592bca641eb88cc9a80c90e591afebd0fRefgit.kernel.org/stable/c/bd83ff3bbfb003832481c9bff999d12385f396aeRefgit.kernel.org/stable/c/c27f744ceefadc7bbeb14233b6abc150ced617d2Refgit.kernel.org/stable/c/f8b383f83cb573152c577eca1ef101e89995b72a

How CyberStrike helps

Frequently asked questions

What is CVE-2022-49410?

CVE-2022-49410 is a high-severity vulnerability. It was published on February 26, 2025 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2022-49410?

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-2022-49410?

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-2022-49410?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-49410 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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