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CVE-2023-53357

7.1 · HIGH

In the Linux kernel, the following vulnerability has been resolved: md/raid10: check slab-out-of-bounds in md_bitmap_get_counter If we write a large number to md/bitmap_set_bits, md_bitmap_checkp…

Published Sep 17, 2025CWE-125EPSS 0.20%

Overview

CVE-2023-53357 is a high-severity vulnerability. It was published on September 17, 2025 and has a CVSS 3.1 base score of 7.1 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.1, 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:

md/raid10: check slab-out-of-bounds in md_bitmap_get_counter

If we write a large number to md/bitmap_set_bits, md_bitmap_checkpage()

will return -EINVAL because 'page >= bitmap->pages', but the return value

was not checked immediately in md_bitmap_get_counter() in order to set

*blocks value and slab-out-of-bounds occurs.

Move check of 'page >= bitmap->pages' to md_bitmap_get_counter() and

return directly if true.

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/152bb26796ff054af50b2ee1b3ca56e364e4f61bRefgit.kernel.org/stable/c/301867b1c16805aebbc306aafa6ecdc68b73c7e5Refgit.kernel.org/stable/c/374fb914304d9b500721007f3837ea8f1f9a2418Refgit.kernel.org/stable/c/39fa14e824acfd470db4f42c354297456bd82b53Refgit.kernel.org/stable/c/a134dd582c0d5b6068efa308bd485cf1d00b3f65Refgit.kernel.org/stable/c/b0b971fe7d61411ede63c3291764dbde1577ef2cRefgit.kernel.org/stable/c/be1a3ec63a840cc9e59a033acf154f56255699a1Refgit.kernel.org/stable/c/bea301c046110bf421a3ce153fb868cb8d618e90

How CyberStrike helps

Frequently asked questions

What is CVE-2023-53357?

CVE-2023-53357 is a high-severity vulnerability. It was published on September 17, 2025 and has a CVSS 3.1 base score of 7.1 (HIGH).

How severe is CVE-2023-53357?

This vulnerability has a CVSS 3.1 base score of 7.1, 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-2023-53357?

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-2023-53357?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-53357 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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