Vulnerability CVE-2024-26950
Published: 2024-05-01

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

wireguard: netlink: access device through ctx instead of peer

The previous commit fixed a bug that led to a NULL peer->device being
dereferenced. It's actually easier and faster performance-wise to
instead get the device from ctx->wg. This semantically makes more sense
too, since ctx->wg->peer_allowedips.seq is compared with
ctx->allowedips_seq, basing them both in ctx. This also acts as a
defence in depth provision against freed peers.

 References:
https://git.kernel.org/stable/c/493aa6bdcffd90a4f82aa614fe4f4db0641b4068
https://git.kernel.org/stable/c/4be453271a882c8ebc28df3dbf9e4d95e6ac42f5
https://git.kernel.org/stable/c/09c3fa70f65175861ca948cb2f0f791e666c90e5
https://git.kernel.org/stable/c/c991567e6c638079304cc15dff28748e4a3c4a37
https://git.kernel.org/stable/c/93bcc1752c69bb309f4d8cfaf960ef1faeb34996
https://git.kernel.org/stable/c/d44bd323d8bb8031eef4bdc44547925998a11e47
https://git.kernel.org/stable/c/71cbd32e3db82ea4a74e3ef9aeeaa6971969c86f
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