CVE-2024-42247: wireguard: allowedips: avoid unaligned 64-bit memory accesses
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 swapendian() tries to load a 128-bit IPv6 address from an unaligned memory location:
Kernel: unaligned access to 0x55f4688c in wgallowedipsinsertv6+0x2c/0x80 [wireguard] (iir 0xf3010df) Kernel: unaligned access to 0x55f46884 in wgallowedipsinsertv6+0x38/0x80 [wireguard] (iir 0xf2010dc)
Avoid such unaligned memory accesses by instead using the getunalignedbe64() helper macro.
[Jason: replace src[8] in original patch with src+8]
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
debian/linuxto a version that resolves this vulnerability.Fixed in 6.1.106-1 - Upgrade
Upgrade
debian/linuxto a version that resolves this vulnerability.Fixed in 6.9.10-1 - Upgrade
Upgrade
debian/linuxto a version that resolves this vulnerability.Fixed in 6.1.176-1Fixed in 6.1.190-1Fixed in 6.12.107-1Fixed in 6.12.115-2Fixed in 7.2.12-1Fixed in 7.2.15-1
Event History
Frequently Asked Questions
What is the severity of CVE-2024-42247?
CVE-2024-42247 is classified as a medium severity vulnerability in the Linux kernel.
How do I fix CVE-2024-42247?
To fix CVE-2024-42247, update to the patched versions of the Linux kernel: 5.10.223-1, 5.10.226-1, 6.1.123-1, 6.1.128-1, 6.12.12-1, or 6.12.15-1.
Which Linux kernel versions are affected by CVE-2024-42247?
CVE-2024-42247 affects multiple versions of the Linux kernel prior to 5.10.223, 5.10.226, 6.1.123, 6.1.128, 6.12.12, and 6.12.15.
What platforms are impacted by CVE-2024-42247?
The CVE-2024-42247 vulnerability specifically affects the parisc platform within the Linux kernel.
Is CVE-2024-42247 related to memory accesses?
Yes, CVE-2024-42247 involves issues with unaligned 64-bit memory accesses in the WireGuard implementation.