CVE-2022-49497 Information

Description

In the Linux kernel the following vulnerability has been resolved:

net: remove two BUG() from skb_checksum_help()

I have a syzbot report that managed to get a crash in skb_checksum_help()

If syzbot can trigger these BUG() it makes sense to replace them with more friendly WARN_ON_ONCE() since skb_checksum_help() can instead return an error code.

Note that syzbot will still crash there until real bug is fixed.

Reference

https://git.kernel.org/stable/c/312c43e98ed190bd8fd7a71a0addf9539d5b8ab1 https://git.kernel.org/stable/c/6320ae1b5876c30bf98203b6a5abe8b5c45e6a04 https://git.kernel.org/stable/c/b1320c9a4d30ff54b824a8ad6036e0b5fb4c5e73 https://git.kernel.org/stable/c/d5281245f3502e960cb6b89348767b935379cee3 https://git.kernel.org/stable/c/d7ea0d9df2a6265b2b180d17ebc64b38105968fc