CVE-2024-42247: linux kernel DoS — Fix

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]

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CVSS v3.1 Score

5.5

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-770 CWE-770

Affected Products

Vendor	Product	Versions
linux	linux_kernel	5.6 — 5.10.222
linux	linux_kernel	5.11 — 5.15.163
linux	linux_kernel	5.16 — 6.1.100
linux	linux_kernel	6.2 — 6.6.41
linux	linux_kernel	6.7 — 6.9.10

References

Advisories & Patches

https://git.kernel.org/stable/c/217978a29c6ceca76d3c640bf94bdf50c268d801 https://git.kernel.org/stable/c/2fb34bf76431e831f9863cd59adc0bd1f67b0fbf https://git.kernel.org/stable/c/6638a203abad35fa636d59ac47bdbc4bc100fd74 https://git.kernel.org/stable/c/948f991c62a4018fb81d85804eeab3029c6209f8 https://git.kernel.org/stable/c/ae630de24efb123d7199a43256396d7758f4cb75 https://git.kernel.org/stable/c/b4764f0ad3d68de8a0b847c05f427afb86dd54e6

Other References

https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html

Frequently Asked Questions

What is CVE-2024-42247? +

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] It has a CVSS v3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-42247? +

CVE-2024-42247 has a CVSS v3.1 score of 5.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2024-42247? +

CVE-2024-42247 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-42247? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2024-42247