CVE-2024-50251
MEDIUMLinux Kernel 4.5-6.11.6 - DoS via nft_payload Offset/Length Check Bypass
Title source: llmExploitation Summary
EIP tracks 1 public exploit for CVE-2024-50251. PoCs published by slavin-ayu.
AI-analyzed exploit summary This PoC demonstrates a local denial-of-service (DoS) vulnerability in the Linux kernel by manipulating nftables rules and triggering a crash via a crafted UDP packet. The exploit uses user and network namespaces to isolate the attack environment.
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.
Exploits (1)
This PoC demonstrates a local denial-of-service (DoS) vulnerability in the Linux kernel by manipulating nftables rules and triggering a crash via a crafted UDP packet. The exploit uses user and network namespaces to isolate the attack environment.
References (14)
Scores
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H