Vulnerability CVE-2024-42247
Published: 2024-08-07

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]

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