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CVE-2023-52646

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: aio: fix mremap after fork null-deref Commit e4a0d3e720e7 ("aio: Make it possible to remap aio ring") introduced a null-deref i…

Published Apr 26, 2024CWE-476EPSS 0.24%

Overview

CVE-2023-52646 is a medium-severity vulnerability. It was published on April 26, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. 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:

aio: fix mremap after fork null-deref

Commit e4a0d3e720e7 ("aio: Make it possible to remap aio ring") introduced

a null-deref if mremap is called on an old aio mapping after fork as

mm->ioctx_table will be set to NULL.

[[email protected]: fix 80 column issue]

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/178993157e8c50aef7f35d7d6d3b44bb428199e1Refgit.kernel.org/stable/c/4326d0080f7e84fba775da41d158f46cf9d3f1c2Refgit.kernel.org/stable/c/808f1e4b5723ae4eda724d2ad6f6638905eefd95Refgit.kernel.org/stable/c/81e9d6f8647650a7bead74c5f926e29970e834d1Refgit.kernel.org/stable/c/af126acf01a12bdb04986fd26fc2eb3b40249e0dRefgit.kernel.org/stable/c/c261f798f7baa8080cf0214081d43d5f86bb073fRefgit.kernel.org/stable/c/d8dca1bfe9adcae38b35add64977818c0c13dd22Refgit.kernel.org/stable/c/178993157e8c50aef7f35d7d6d3b44bb428199e1Refgit.kernel.org/stable/c/4326d0080f7e84fba775da41d158f46cf9d3f1c2Refgit.kernel.org/stable/c/808f1e4b5723ae4eda724d2ad6f6638905eefd95

How CyberStrike helps

Frequently asked questions

What is CVE-2023-52646?

CVE-2023-52646 is a medium-severity vulnerability. It was published on April 26, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2023-52646?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2023-52646?

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-2023-52646?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-52646 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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