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CVE-2024-26590

5.5 · MEDIUM
Published Feb 22, 2024 linux CWE-476 EPSS 0.22% (13th pctl)

Overview

CVE-2024-26590 is a medium-severity vulnerability affecting linux linux_kernel. It was published on February 22, 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:

erofs: fix inconsistent per-file compression format

EROFS can select compression algorithms on a per-file basis, and each

per-file compression algorithm needs to be marked in the on-disk

superblock for initialization.

However, syzkaller can generate inconsistent crafted images that use

an unsupported algorithmtype for specific inodes, e.g. use MicroLZMA

algorithmtype even it's not set in `sbi->available_compr_algs`. This

can lead to an unexpected "BUG: kernel NULL pointer dereference" if

the corresponding decompressor isn't built-in.

Fix this by checking against `sbi->available_compr_algs` for each

m_algorithmformat request. Incorrect !erofs_sb_has_compr_cfgs preset

bitmap is now fixed together since it was harmless previously.

Remediation

Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. 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.

Affected Products

Vendor Product Versions Status
linux linux_kernel >= 5.16.0, < 6.6.14 Affected

References

Ref git.kernel.org/stable/c/118a8cf504d7dfa519562d000f423ee3ca75d2c4 Ref git.kernel.org/stable/c/47467e04816cb297905c0f09bc2d11ef865942d9 Ref git.kernel.org/stable/c/823ba1d2106019ddf195287ba53057aee33cf724 Ref git.kernel.org/stable/c/eed24b816e50c6cd18cbee0ff0d7218c8fced199 Ref git.kernel.org/stable/c/118a8cf504d7dfa519562d000f423ee3ca75d2c4 Ref git.kernel.org/stable/c/47467e04816cb297905c0f09bc2d11ef865942d9 Ref git.kernel.org/stable/c/823ba1d2106019ddf195287ba53057aee33cf724 Ref git.kernel.org/stable/c/eed24b816e50c6cd18cbee0ff0d7218c8fced199

Frequently Asked Questions

What is CVE-2024-26590?

CVE-2024-26590 is a medium-severity vulnerability affecting linux linux_kernel. It was published on February 22, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-26590?

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-2024-26590?

Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. 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-2024-26590?

CyberStrike's AI-powered security agents can automatically detect CVE-2024-26590 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.

How CyberStrike Helps

Autonomous Discovery

AI agents map your attack surface to find vulnerabilities like this one.
Continuous Pentesting

Automated penetration testing that runs continuously, not just quarterly.
Code Review

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HackBrowser

Browser-based exploitation validates findings with real proof-of-concept.

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