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CVE-2024-42247

7.5 · HIGH

In the Linux kernel, the following vulnerability has been resolved: wireguard: allowedips: avoid unaligned 64-bit memory accesses On the parisc platform, the kernel issues kernel warnings because…

Published Aug 7, 2024CWE-770EPSS 0.72%

Overview

CVE-2024-42247 is a high-severity vulnerability. It was published on August 7, 2024 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

wireguard: allowedips: avoid unaligned 64-bit memory accesses

On the parisc platform, the kernel issues kernel warnings because

swap_endian() tries to load a 128-bit IPv6 address from an unaligned

memory location:

Kernel: unaligned access to 0x55f4688c in wg_allowedips_insert_v6+0x2c/0x80 [wireguard] (iir 0xf3010df)

Kernel: unaligned access to 0x55f46884 in wg_allowedips_insert_v6+0x38/0x80 [wireguard] (iir 0xf2010dc)

Avoid such unaligned memory accesses by instead using the

get_unaligned_be64() helper macro.

[Jason: replace src[8] in original patch with src+8]

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/217978a29c6ceca76d3c640bf94bdf50c268d801Refgit.kernel.org/stable/c/2fb34bf76431e831f9863cd59adc0bd1f67b0fbfRefgit.kernel.org/stable/c/6638a203abad35fa636d59ac47bdbc4bc100fd74Refgit.kernel.org/stable/c/948f991c62a4018fb81d85804eeab3029c6209f8Refgit.kernel.org/stable/c/ae630de24efb123d7199a43256396d7758f4cb75Refgit.kernel.org/stable/c/b4764f0ad3d68de8a0b847c05f427afb86dd54e6Reflists.debian.org/debian-lts-announce/2025/01/msg00001.html

How CyberStrike helps

Frequently asked questions

What is CVE-2024-42247?

CVE-2024-42247 is a high-severity vulnerability. It was published on August 7, 2024 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2024-42247?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2024-42247?

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-2024-42247?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-42247 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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