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CVE-2024-26863

5.5 · MEDIUM
Published Apr 17, 2024 linux CWE-908 EPSS 0.25% (16th pctl)

Overview

CVE-2024-26863 is a medium-severity vulnerability affecting linux linux_kernel. 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 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 >= 3.17, < 4.19.311 Affected

References

Ref git.kernel.org/stable/c/09e5cdbe2cc88c3c758927644a3eb02fac317209 Ref git.kernel.org/stable/c/1ed222ca7396938eb1ab2d034f1ba0d8b00a7122 Ref git.kernel.org/stable/c/39cc316fb3bc5e7c9dc5eed314fe510d119c6862 Ref git.kernel.org/stable/c/7fb2d4d6bb1c85f7a23aace0ed6c86a95dea792a Ref git.kernel.org/stable/c/889ed056eae7fda85b769a9ab33c093379c45428 Ref git.kernel.org/stable/c/97d2148ea435dff4b4e71817c9032eb321bcd37e Ref git.kernel.org/stable/c/a809bbfd0e503351d3051317288a70a4569a4949 Ref git.kernel.org/stable/c/ddbec99f58571301679addbc022256970ca3eac6 Ref git.kernel.org/stable/c/e3b2bfb8ff1810a537b2aa55ba906a6743ed120c Ref git.kernel.org/stable/c/09e5cdbe2cc88c3c758927644a3eb02fac317209

Frequently Asked Questions

What is CVE-2024-26863?

CVE-2024-26863 is a medium-severity vulnerability affecting linux linux_kernel. 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 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.

How can CyberStrike help with CVE-2024-26863?

CyberStrike's AI-powered security agents can automatically detect CVE-2024-26863 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

Autonomous Discovery

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HackBrowser

Browser-based exploitation validates findings with real proof-of-concept.

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