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[rlc-8/4.18.0-553.174.1.el8_10] Multiple patches tested (2 commits) - #1716
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cve-pre CVE-2026-99999 commit-author Antonio Ojea <aojea@google.com> commit 26a77d0 when packet is enqueued with nfqueue and GSO is enabled, checksum calculation has to take into account the protocol, as SCTP uses a 32 bits CRC checksum. Enter skb_gso_segment() path in case of SCTP GSO packets because skb_zerocopy() does not support for GSO_BY_FRAGS. Joint work with Pablo. Signed-off-by: Antonio Ojea <aojea@google.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> (cherry picked from commit 26a77d0) Signed-off-by: Brett Mastbergen <bmastbergen@ciq.com>
cve CVE-2026-99999 commit-author Michael S. Tsirkin <mst@redhat.com> commit 6785011 upstream-diff Dropped the net/bridge/netfilter/nf_conntrack_bridge.c hunk: this tree predates bridge connection tracking (added upstream in 4.19 by 3c171f4 "netfilter: bridge: add connection tracking system"), so the guarded nf_br_ip_fragment() does not exist here. Also hand-resolved adding #include <net/ip.h> in net/netfilter/nfnetlink_queue.c: the 4.18 include block lacks the newer context the upstream hunk anchors on (this tree predates include/net/gso.h, added upstream by d457a0e "net: move gso declarations and functions to their own files"); placed the include in the net/ group before <net/sock.h>. If a packet with bad checksum metadata gets into the ipv4 stack, skb_checksum_help can corrupt the network header and cause a bunch of mischief. This was discovered and reported by Paulos, and has been reporoduced by others independently since. We really shouldn't allow such packets in, but as a defence in depth measure, let's also check before we complete the checksum. A more complete validation at input is forthcoming, but needs more work. Cc: stable@vger.kernel.org Fixes: f43798c ("tun: Allow GSO using virtio_net_hdr") Fixes: bfd5f4a ("packet: Add GSO/csum offload support.") Reported-by: Paulos Yibelo <habte.yibelo@gmail.com> Closes: https://lore.kernel.org/netdev/20260922030310.8684-2-habte.yibelo@gmail.com/ Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/0a012b4923e189c4c593ef4f471e5ff0edbe9030.1791412497.git.mst@redhat.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> (cherry picked from commit 6785011) Signed-off-by: Brett Mastbergen <bmastbergen@ciq.com>
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