CVE-2024-49977

5.5 · MEDIUM

Published Oct 21, 2024 linux CWE-369 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-2024-49977 is a medium-severity vulnerability affecting linux linux_kernel. It was published on October 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: stmmac: Fix zero-division error when disabling tc cbs

The commit b8c43360f6e4 ("net: stmmac: No need to calculate speed divider

when offload is disabled") allows the "port_transmit_rate_kbps" to be

set to a value of 0, which is then passed to the "div_s64" function when

tc-cbs is disabled. This leads to a zero-division error.

When tc-cbs is disabled, the idleslope, sendslope, and credit values the

credit values are not required to be configured. Therefore, adding a return

statement after setting the txQ mode to DCB when tc-cbs is disabled would

prevent a zero-division error.

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	>= 5.10.221, < 5.10.227	Affected

References

Ref git.kernel.org/stable/c/03582f4752427f60817d896f1a827aff772bd31e Ref git.kernel.org/stable/c/5d43e1ad4567d67af2b42d3ab7c14152ffed25c6 Ref git.kernel.org/stable/c/675faf5a14c14a2be0b870db30a70764df81e2df Ref git.kernel.org/stable/c/837d9df9c0792902710149d1a5e0991520af0f93 Ref git.kernel.org/stable/c/b0da9504a528f05f97d926b4db74ff21917a33e9 Ref git.kernel.org/stable/c/e297a2bf56d12fd7f91a0c209eb6ea84361f3368 Ref git.kernel.org/stable/c/e33fe25b1efe4f2e6a5858786dbc82ae4c44ed4c Ref lists.debian.org/debian-lts-announce/2025/01/msg00001.html Ref lists.debian.org/debian-lts-announce/2025/03/msg00002.html Ref cert-portal.siemens.com/productcert/html/ssa-265688.html

Frequently Asked Questions

What is CVE-2024-49977?

CVE-2024-49977 is a medium-severity vulnerability affecting linux linux_kernel. It was published on October 21, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-49977?

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-2024-49977?

How can CyberStrike help with CVE-2024-49977?

CyberStrike's AI-powered security agents can automatically detect CVE-2024-49977 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

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HackBrowser

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