CVE-2024-56648

5.5 · MEDIUM

Published Dec 27, 2024 linux CWE-908 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-2024-56648 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:

net: hsr: avoid potential out-of-bound access in fill_frame_info()

syzbot is able to feed a packet with 14 bytes, pretending

it is a vlan one.

Since fill_frame_info() is relying on skb->mac_len already,

extend the check to cover this case.

BUG: KMSAN: uninit-value in fill_frame_info net/hsr/hsr_forward.c:709 [inline]

BUG: KMSAN: uninit-value in hsr_forward_skb+0x9ee/0x3b10 net/hsr/hsr_forward.c:724

fill_frame_info net/hsr/hsr_forward.c:709 [inline]

hsr_forward_skb+0x9ee/0x3b10 net/hsr/hsr_forward.c:724

hsr_dev_xmit+0x2f0/0x350 net/hsr/hsr_device.c:235

__netdev_start_xmit include/linux/netdevice.h:5002 [inline]

netdev_start_xmit include/linux/netdevice.h:5011 [inline]

xmit_one net/core/dev.c:3590 [inline]

dev_hard_start_xmit+0x247/0xa20 net/core/dev.c:3606

__dev_queue_xmit+0x366a/0x57d0 net/core/dev.c:4434

dev_queue_xmit include/linux/netdevice.h:3168 [inline]

packet_xmit+0x9c/0x6c0 net/packet/a

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	>= 5.10.42, < 5.10.231	Affected

References

Ref git.kernel.org/stable/c/3c215663b3e27a3b08cefcaea623ff54c70c8035 Ref git.kernel.org/stable/c/6bb5c8ebc99f0671dbd3c9408ebaf935c3951186 Ref git.kernel.org/stable/c/7ea527fbd7b94d0bee64a0a7e98279bcc654b322 Ref git.kernel.org/stable/c/aa632691c722a123e47ccd05a3afdd5f87a36061 Ref git.kernel.org/stable/c/b9653d19e556c6afd035602927a93d100a0d7644 Ref git.kernel.org/stable/c/c6e778901d0055356c4fb223058364cae731494a 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-2024-56648?

CVE-2024-56648 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-2024-56648?

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-2024-56648?

How can CyberStrike help with CVE-2024-56648?

CyberStrike's AI-powered security agents can automatically detect CVE-2024-56648 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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