CVE-2024-56543

5.5 · MEDIUM

Published Dec 27, 2024 linux EPSS 0.21% (12th pctl) CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Overview

CVE-2024-56543 is a medium-severity vulnerability affecting linux linux_kernel. It was published on December 27, 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: ath12k: Skip Rx TID cleanup for self peer

During peer create, dp setup for the peer is done where Rx TID is

updated for all the TIDs. Peer object for self peer will not go through

dp setup.

When core halts, dp cleanup is done for all the peers. While cleanup,

rx_tid::ab is accessed which causes below stack trace for self peer.

WARNING: CPU: 6 PID: 12297 at drivers/net/wireless/ath/ath12k/dp_rx.c:851

Call Trace:

__warn+0x7b/0x1a0

ath12k_dp_rx_frags_cleanup+0xd2/0xe0 [ath12k]

report_bug+0x10b/0x200

handle_bug+0x3f/0x70

exc_invalid_op+0x13/0x60

asm_exc_invalid_op+0x16/0x20

ath12k_dp_rx_frags_cleanup+0xd2/0xe0 [ath12k]

ath12k_dp_rx_frags_cleanup+0xca/0xe0 [ath12k]

ath12k_dp_rx_peer_tid_cleanup+0x39/0xa0 [ath12k]

ath12k_mac_peer_cleanup_all+0x61/0x100 [ath12k]

ath12k_core_halt+0x3b/0x100 [ath12k]

ath12k_core_reset+0x494/0x4c0 [ath12k]

sta object in peer will be updated when remote peer is created. Hence

use peer:

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	>= 6.3, < 6.6.64	Affected

References

Ref git.kernel.org/stable/c/1a0c640ce1cdcde3eb131a0c1e70ca1ed7cf27cb Ref git.kernel.org/stable/c/a052483d495a4dc62c814f2fd17d0ceb308fc6a6 Ref git.kernel.org/stable/c/a1e2d6738b29c74c2024eb23167dfff68aadd984 Ref git.kernel.org/stable/c/d73da0dd2853887b7aab71f0d572fd3314dafafe

Frequently Asked Questions

What is CVE-2024-56543?

CVE-2024-56543 is a medium-severity vulnerability affecting linux linux_kernel. It was published on December 27, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-56543?

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-2024-56543?

How can CyberStrike help with CVE-2024-56543?

CyberStrike's AI-powered security agents can automatically detect CVE-2024-56543 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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