CVE-2024-36244

5.5 · MEDIUM

Published Jun 21, 2024 linux EPSS 0.25% (16th pctl) CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Overview

CVE-2024-36244 is a medium-severity vulnerability affecting linux linux_kernel. It was published on June 21, 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:

net/sched: taprio: extend minimum interval restriction to entire cycle too

It is possible for syzbot to side-step the restriction imposed by the

blamed commit in the Fixes: tag, because the taprio UAPI permits a

cycle-time different from (and potentially shorter than) the sum of

entry intervals.

We need one more restriction, which is that the cycle time itself must

be larger than N * ETH_ZLEN bit times, where N is the number of schedule

entries. This restriction needs to apply regardless of whether the cycle

time came from the user or was the implicit, auto-calculated value, so

we move the existing "cycle == 0" check outside the "if "(!new->cycle_time)"

branch. This way covers both conditions and scenarios.

Add a selftest which illustrates the issue triggered by syzbot.

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	>= 5.4.68, < 5.5	Affected

References

Ref git.kernel.org/stable/c/34d83c3e6e97867ae061d14eb52123404aab1cbc Ref git.kernel.org/stable/c/91f249b01fe490fce11fbb4307952ca8cce78724 Ref git.kernel.org/stable/c/b939d1e04a90248b4cdf417b0969c270ceb992b2 Ref git.kernel.org/stable/c/fb66df20a7201e60f2b13d7f95d031b31a8831d3 Ref git.kernel.org/stable/c/91f249b01fe490fce11fbb4307952ca8cce78724 Ref git.kernel.org/stable/c/b939d1e04a90248b4cdf417b0969c270ceb992b2 Ref git.kernel.org/stable/c/fb66df20a7201e60f2b13d7f95d031b31a8831d3 Ref lists.debian.org/debian-lts-announce/2025/01/msg00001.html

Frequently Asked Questions

What is CVE-2024-36244?

CVE-2024-36244 is a medium-severity vulnerability affecting linux linux_kernel. It was published on June 21, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-36244?

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-2024-36244?

How can CyberStrike help with CVE-2024-36244?

CyberStrike's AI-powered security agents can automatically detect CVE-2024-36244 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.

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HackBrowser

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