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CVE-2024-26863

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: hsr: Fix uninit-value access in hsr_get_node() KMSAN reported the following uninit-value access issue [1]: ===================…

Published Apr 17, 2024CWE-908EPSS 0.25%

Overview

CVE-2024-26863 is a medium-severity vulnerability. It was published on April 17, 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:

hsr: Fix uninit-value access in hsr_get_node()

KMSAN reported the following uninit-value access issue [1]:

=====================================================

BUG: KMSAN: uninit-value in hsr_get_node+0xa2e/0xa40 net/hsr/hsr_framereg.c:246

hsr_get_node+0xa2e/0xa40 net/hsr/hsr_framereg.c:246

fill_frame_info net/hsr/hsr_forward.c:577 [inline]

hsr_forward_skb+0xe12/0x30e0 net/hsr/hsr_forward.c:615

hsr_dev_xmit+0x1a1/0x270 net/hsr/hsr_device.c:223

__netdev_start_xmit include/linux/netdevice.h:4940 [inline]

netdev_start_xmit include/linux/netdevice.h:4954 [inline]

xmit_one net/core/dev.c:3548 [inline]

dev_hard_start_xmit+0x247/0xa10 net/core/dev.c:3564

__dev_queue_xmit+0x33b8/0x5130 net/core/dev.c:4349

dev_queue_xmit include/linux/netdevice.h:3134 [inline]

packet_xmit+0x9c/0x6b0 net/packet/af_packet.c:276

packet_snd net/packet/af_packet.c:3087 [inline]

packet_sendmsg+0x8b1d/0x9f30 net/packet/af_packet.c:311

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. 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.

References

Refgit.kernel.org/stable/c/09e5cdbe2cc88c3c758927644a3eb02fac317209Refgit.kernel.org/stable/c/1ed222ca7396938eb1ab2d034f1ba0d8b00a7122Refgit.kernel.org/stable/c/39cc316fb3bc5e7c9dc5eed314fe510d119c6862Refgit.kernel.org/stable/c/7fb2d4d6bb1c85f7a23aace0ed6c86a95dea792aRefgit.kernel.org/stable/c/889ed056eae7fda85b769a9ab33c093379c45428Refgit.kernel.org/stable/c/97d2148ea435dff4b4e71817c9032eb321bcd37eRefgit.kernel.org/stable/c/a809bbfd0e503351d3051317288a70a4569a4949Refgit.kernel.org/stable/c/ddbec99f58571301679addbc022256970ca3eac6Refgit.kernel.org/stable/c/e3b2bfb8ff1810a537b2aa55ba906a6743ed120cRefgit.kernel.org/stable/c/09e5cdbe2cc88c3c758927644a3eb02fac317209

How CyberStrike helps

Frequently asked questions

What is CVE-2024-26863?

CVE-2024-26863 is a medium-severity vulnerability. It was published on April 17, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-26863?

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-2024-26863?

Check the references section for vendor advisories, patches, and mitigation guidance. 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-2024-26863?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-26863 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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