CVE-2026-74624

*** Pendiente de traducción *** In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> netfilter: nf_conntrack: defer invalid log until after unlock<br /> <br /> TCP and SCTP conntrack paths can emit invalid-packet logs while ct-&gt;lock<br /> is still held.<br /> <br /> When invalid logging is routed to nfnetlink_log and conntrack export is<br /> enabled, the log path can re-enter conntrack netlink glue and dump the<br /> same conntrack again. Protocol attribute dumping may take ct-&gt;lock, so<br /> logging while holding that lock can deadlock.<br /> <br /> Defer the TCP invalid logs by storing only the minimal log context while<br /> ct-&gt;lock is held and emitting the log after unlocking. Also make the TCP<br /> timeout-lowering invalid path return whether a log is needed, then emit<br /> that log after unlocking.<br /> <br /> Do the same for the SCTP invalid state-transition log that can be reached<br /> while ct-&gt;lock is held.<br /> <br /> Add a lockdep assertion to nf_ct_l4proto_log_invalid() so future callers<br /> that log invalid conntracks while holding ct-&gt;lock are caught outside TCP<br /> and SCTP as well.