CVE-2024-56623

5.5 · MEDIUM

Published Dec 27, 2024 linux CWE-416 EPSS 0.22% (12th pctl) CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Overview

CVE-2024-56623 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:

scsi: qla2xxx: Fix use after free on unload

System crash is observed with stack trace warning of use after

free. There are 2 signals to tell dpc_thread to terminate (UNLOADING

flag and kthread_stop).

On setting the UNLOADING flag when dpc_thread happens to run at the time

and sees the flag, this causes dpc_thread to exit and clean up

itself. When kthread_stop is called for final cleanup, this causes use

after free.

Remove UNLOADING signal to terminate dpc_thread. Use the kthread_stop

as the main signal to exit dpc_thread.

[596663.812935] kernel BUG at mm/slub.c:294!

[596663.812950] invalid opcode: 0000 [#1] SMP PTI

[596663.812957] CPU: 13 PID: 1475935 Comm: rmmod Kdump: loaded Tainted: G IOE --------- - - 4.18.0-240.el8.x86_64 #1

[596663.812960] Hardware name: HP ProLiant DL380p Gen8, BIOS P70 08/20/2012

[596663.812974] RIP: 0010:__slab_free+0x17d/0x360

...

[596663.813008] Call Trace:

[596663.813022

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, < 5.10.231	Affected

References

Ref git.kernel.org/stable/c/07c903db0a2ff84b68efa1a74a4de353ea591eb0 Ref git.kernel.org/stable/c/12f04fc8580eafb0510f805749553eb6213f323e Ref git.kernel.org/stable/c/15369e774f27ec790f207de87c0b541e3f90b22d Ref git.kernel.org/stable/c/6abf16d3c915b2feb68c1c8b25fcb71b13f98478 Ref git.kernel.org/stable/c/b3e6f25176f248762a24d25ab8cf8c5e90874f80 Ref git.kernel.org/stable/c/ca36d9d53745d5ec8946ef85006d4da605ea7c54 Ref lists.debian.org/debian-lts-announce/2025/03/msg00001.html Ref lists.debian.org/debian-lts-announce/2025/03/msg00002.html

Frequently Asked Questions

What is CVE-2024-56623?

CVE-2024-56623 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-2024-56623?

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-2024-56623?

How can CyberStrike help with CVE-2024-56623?

CyberStrike's AI-powered security agents can automatically detect CVE-2024-56623 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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