CVE-2024-50251 Information

Description

In the Linux kernel the following vulnerability has been resolved:

netfilter: nft_payload: sanitize offset and length before calling skb_checksum()

If access to offset + length is larger than the skbuff length then skb_checksum() triggers BUG_ON().

skb_checksum() internally subtracts the length parameter while iterating over skbuff BUG_ON(len) at the end of it checks that the expected length to be included in the checksum calculation is fully consumed.

Reference

https://git.kernel.org/stable/c/a661ed364ae6ae88c2fafa9ddc27df1af2a73701 https://git.kernel.org/stable/c/ac7df3fc80fc82bcc3b1e8f6ebc0d2c435d0c534 https://git.kernel.org/stable/c/e3e608cbad376674d19a71ccd0d41804d9393f02 https://git.kernel.org/stable/c/b1d2de8a669fa14c499a385e056944d5352b3b40 https://git.kernel.org/stable/c/d3217323525f7596427124359e76ea0d8fcc9874 https://git.kernel.org/stable/c/0ab3be58b45b996764aba0187b46de19b3e58a72 https://git.kernel.org/stable/c/c43e0ea848e7b9bef7a682cbc5608022d6d29d7b https://git.kernel.org/stable/c/d5953d680f7e96208c29ce4139a0e38de87a57fe