In the Linux kernel, the following vulnerability has been resolved:
tap: add missing verification for short frame
The cited commit missed to check against the validity of the frame length
in the tap_get_user_xdp() path, which could cause a corrupted skb to be
sent downstack. Even before the skb is transmitted, the
tap_get_user_xdp()–>skb_set_network_header() may assume the size is more
than ETH_HLEN. Once transmitted, this could either cause out-of-bound
access beyond the actual length, or confuse the underlayer with incorrect
or inconsistent header length in the skb metadata.
In the alternative path, tap_get_user() already prohibits short frame which
has the length less than Ethernet header size from being transmitted.
This is to drop any frame shorter than the Ethernet header size just like
how tap_get_user() does.
CVE: CVE-2024-41090
git.kernel.org/stable/c/73d462a38d5f782b7c872fe9ae8393d9ef5483da
git.kernel.org/stable/c/7431144b406ae82807eb87d8c98e518475b0450f
git.kernel.org/stable/c/8be915fc5ff9a5e296f6538be12ea75a1a93bdea
git.kernel.org/stable/c/aa6a5704cab861c9b2ae9f475076e1881e87f5aa
git.kernel.org/stable/c/e1a786b9bbb767fd1c922d424aaa8078cc542309
git.kernel.org/stable/c/e5e5e63c506b93b89b01f522b6a7343585f784e6
git.kernel.org/stable/c/ed7f2afdd0e043a397677e597ced0830b83ba0b3
git.kernel.org/stable/c/ee93e6da30377cf2a75e16cd32bb9fcd86a61c46