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CVE-2024-49938

5.5 · MEDIUM
Published Oct 21, 2024 linux CWE-824 EPSS 0.26% (17th pctl)

Overview

CVE-2024-49938 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:

wifi: ath9k_htc: Use __skb_set_length() for resetting urb before resubmit

Syzbot points out that skb_trim() has a sanity check on the existing length of

the skb, which can be uninitialised in some error paths. The intent here is

clearly just to reset the length to zero before resubmitting, so switch to

calling __skb_set_length(skb, 0) directly. In addition, __skb_set_length()

already contains a call to skb_reset_tail_pointer(), so remove the redundant

call.

The syzbot report came from ath9k_hif_usb_reg_in_cb(), but there's a similar

usage of skb_trim() in ath9k_hif_usb_rx_cb(), change both while we're at it.

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 >= 0, < 5.10.227 Affected

References

Ref git.kernel.org/stable/c/012ae530afa0785102360de452745d33c99a321b Ref git.kernel.org/stable/c/2c230210ec0ae6ed08306ac70dc21c24b817bb95 Ref git.kernel.org/stable/c/6a875220670475d9247e576c15dc29823100a4e4 Ref git.kernel.org/stable/c/94745807f3ebd379f23865e6dab196f220664179 Ref git.kernel.org/stable/c/a9f4e28e8adaf0715bd4e01462af0a52ee46b01f Ref git.kernel.org/stable/c/b02eb7c86ff2ef1411c3095ec8a52b13f68db04f Ref git.kernel.org/stable/c/d1f2fbc6a769081503f6ffedbb5cd1ac497f0e77 Ref git.kernel.org/stable/c/e37e348835032d6940ec89308cc8996ded691d2d Ref git.kernel.org/stable/c/e6b9bf32e0695e4f374674002de0527d2a6768eb Ref lists.debian.org/debian-lts-announce/2025/01/msg00001.html

Frequently Asked Questions

What is CVE-2024-49938?

CVE-2024-49938 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-2024-49938?

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-2024-49938?

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-2024-49938?

CyberStrike's AI-powered security agents can automatically detect CVE-2024-49938 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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