CVE-2024-49953

5.5 · MEDIUM

Published Oct 21, 2024 linux CWE-672 EPSS 0.30% (23th pctl) CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Overview

CVE-2024-49953 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/mlx5e: Fix crash caused by calling __xfrm_state_delete() twice

The km.state is not checked in driver's delayed work. When

xfrm_state_check_expire() is called, the state can be reset to

XFRM_STATE_EXPIRED, even if it is XFRM_STATE_DEAD already. This

happens when xfrm state is deleted, but not freed yet. As

__xfrm_state_delete() is called again in xfrm timer, the following

crash occurs.

To fix this issue, skip xfrm_state_check_expire() if km.state is not

XFRM_STATE_VALID.

Oops: general protection fault, probably for non-canonical address 0xdead000000000108: 0000 [#1] SMP

CPU: 5 UID: 0 PID: 7448 Comm: kworker/u102:2 Not tainted 6.11.0-rc2+ #1

Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014

Workqueue: mlx5e_ipsec: eth%d mlx5e_ipsec_handle_sw_limits [mlx5_core]

RIP: 0010:__xfrm_state_delete+0x3d/0x1b0

Code: 0f 84 8b 01 00 00 48 89 fd c6 87 c8 00

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	>= 6.4, < 6.6.55	Affected

References

Ref git.kernel.org/stable/c/0b1672834634df9ac9cedf856db9fc36d92c50ef Ref git.kernel.org/stable/c/151e7dead1f5399a73c19c4b50307ea48aff1dc0 Ref git.kernel.org/stable/c/7b124695db40d5c9c5295a94ae928a8d67a01c3d Ref git.kernel.org/stable/c/fab615ac9fcb8589222303099975d464d8857527

Frequently Asked Questions

What is CVE-2024-49953?

CVE-2024-49953 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-2024-49953?

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-2024-49953?

How can CyberStrike help with CVE-2024-49953?

CyberStrike's AI-powered security agents can automatically detect CVE-2024-49953 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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