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CVE-2024-26993

5.5 · MEDIUM
Published May 1, 2024 linux EPSS 0.27% (19th pctl)

Overview

CVE-2024-26993 is a medium-severity vulnerability affecting linux linux_kernel. It was published on May 1, 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:

fs: sysfs: Fix reference leak in sysfs_break_active_protection()

The sysfs_break_active_protection() routine has an obvious reference

leak in its error path. If the call to kernfs_find_and_get() fails then

kn will be NULL, so the companion sysfs_unbreak_active_protection()

routine won't get called (and would only cause an access violation by

trying to dereference kn->parent if it was called). As a result, the

reference to kobj acquired at the start of the function will never be

released.

Fix the leak by adding an explicit kobject_put() call when kn is NULL.

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 >= 3.16.62, < 3.17 Affected

References

Ref git.kernel.org/stable/c/43f00210cb257bcb0387e8caeb4b46375d67f30c Ref git.kernel.org/stable/c/57baab0f376bec8f54b0fe6beb8f77a57c228063 Ref git.kernel.org/stable/c/5d43e072285e81b0b63cee7189b3357c7768a43b Ref git.kernel.org/stable/c/84bd4c2ae9c3d0a7d3a5c032ea7efff17af17e17 Ref git.kernel.org/stable/c/a4c99b57d43bab45225ba92d574a8683f9edc8e4 Ref git.kernel.org/stable/c/a90bca2228c0646fc29a72689d308e5fe03e6d78 Ref git.kernel.org/stable/c/ac107356aabc362aaeb77463e814fc067a5d3957 Ref git.kernel.org/stable/c/f28bba37fe244889b81bb5c508d3f6e5c6e342c5 Ref git.kernel.org/stable/c/43f00210cb257bcb0387e8caeb4b46375d67f30c Ref git.kernel.org/stable/c/57baab0f376bec8f54b0fe6beb8f77a57c228063

Frequently Asked Questions

What is CVE-2024-26993?

CVE-2024-26993 is a medium-severity vulnerability affecting linux linux_kernel. It was published on May 1, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-26993?

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-2024-26993?

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-2024-26993?

CyberStrike's AI-powered security agents can automatically detect CVE-2024-26993 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

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Code Review

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HackBrowser

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

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