Description: netfilter: nftables: exthdr: fix 4-byte stack OOB write References: Notes: carnil> Introduced in 49499c3e6e18 ("netfilter: nf_tables: switch registers to 32 bit carnil> addressing") carnil> 935b7f643018 ("netfilter: nft_exthdr: add TCP option matching") carnil> 133dc203d77d ("netfilter: nft_exthdr: Support SCTP chunks") carnil> dbb5281a1f84 ("netfilter: nf_tables: add support for matching IPv4 options"). carnil> Vulnerable versions: 4.1-rc1 4.11-rc1 5.3-rc1 5.10.198 5.14-rc1. Bugs: upstream: released (6.6-rc1) [fd94d9dadee58e09b49075240fe83423eb1dcd36] 6.7-upstream-stable: N/A "Fixed before branching point" 6.6-upstream-stable: N/A "Fixed before branching point" 6.1-upstream-stable: released (6.1.54) [d9ebfc0f21377690837ebbd119e679243e0099cc] 5.10-upstream-stable: released (5.10.198) [a7d86a77c33ba1c357a7504341172cc1507f0698] 4.19-upstream-stable: needed sid: released (6.5.6-1) 6.1-bookworm-security: released (6.1.55-1) 5.10-bullseye-security: released (5.10.205-1) 4.19-buster-security: needed