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CVE-2024-43890

5.5 · MEDIUM
Published Aug 26, 2024 linux CWE-190 EPSS 0.26% (17th pctl)

Overview

CVE-2024-43890 is a medium-severity vulnerability affecting linux linux_kernel. It was published on August 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:

tracing: Fix overflow in get_free_elt()

"tracing_map->next_elt" in get_free_elt() is at risk of overflowing.

Once it overflows, new elements can still be inserted into the tracing_map

even though the maximum number of elements (`max_elts`) has been reached.

Continuing to insert elements after the overflow could result in the

tracing_map containing "tracing_map->max_size" elements, leaving no empty

entries.

If any attempt is made to insert an element into a full tracing_map using

`__tracing_map_insert()`, it will cause an infinite loop with preemption

disabled, leading to a CPU hang problem.

Fix this by preventing any further increments to "tracing_map->next_elt"

once it reaches "tracing_map->max_elt".

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 >= 4.7, < 4.19.320 Affected

References

Ref git.kernel.org/stable/c/236bb4690773ab6869b40bedc7bc8d889e36f9d6 Ref git.kernel.org/stable/c/302ceb625d7b990db205a15e371f9a71238de91c Ref git.kernel.org/stable/c/788ea62499b3c18541fd6d621964d8fafbc4aec5 Ref git.kernel.org/stable/c/a172c7b22bc2feaf489cfc6d6865f7237134fdf8 Ref git.kernel.org/stable/c/bcf86c01ca4676316557dd482c8416ece8c2e143 Ref git.kernel.org/stable/c/cd10d186a5409a1fe6e976df82858e9773a698da Ref git.kernel.org/stable/c/d3e4dbc2858fe85d1dbd2e72a9fc5dea988b5c18 Ref git.kernel.org/stable/c/eb223bf01e688dfe37e813c8988ee11c8c9f8d0a Ref lists.debian.org/debian-lts-announce/2024/10/msg00003.html Ref lists.debian.org/debian-lts-announce/2025/01/msg00001.html

Frequently Asked Questions

What is CVE-2024-43890?

CVE-2024-43890 is a medium-severity vulnerability affecting linux linux_kernel. It was published on August 26, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-43890?

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-2024-43890?

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-2024-43890?

CyberStrike's AI-powered security agents can automatically detect CVE-2024-43890 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

AI-driven PR review catches vulnerable dependencies before they ship.
HackBrowser

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

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