{"apiVersion":"1.0","identifier":"CVE-2026-74624","description":"In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_conntrack: defer invalid log until after unlock TCP and SCTP conntrack paths can emit invalid-packet logs while ct->lock is still held. When invalid logging is routed to nfnetlink_log and conntrack export is enabled, the log path can re-enter conntrack netlink glue and dump the same conntrack again. Protocol attribute dumping may take ct->lock, so logging while holding that lock can deadlock. Defer the TCP invalid logs by storing only the minimal log context while ct->lock is held and emitting the log after unlocking. Also make the TCP timeout-lowering invalid path return whether a log is needed, then emit that log after unlocking. Do the same for the SCTP invalid state-transition log that can be reached while ct->lock is held. Add a lockdep assertion to nf_ct_l4proto_log_invalid() so future callers that log invalid conntracks while holding ct->lock are caught outside TCP and SCTP as well.","publishedAt":"2026-08-22T16:16:35","lastModifiedAt":"2026-08-25T06:18:40","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-74624","cvssScore":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","epssProbability":0.00479,"riskScore":0.78,"affectedProduct":"Linux kernel","affectedVersions":"unknown","vulnerabilityType":"Kernel","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-74624","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-74624","en":"https://www.redsauce.net/en/cves/CVE-2026-74624","fr":"https://www.redsauce.net/fr/cves/CVE-2026-74624","pt":"https://www.redsauce.net/pt/cves/CVE-2026-74624","de":"https://www.redsauce.net/de/cves/CVE-2026-74624","sk":"https://www.redsauce.net/sk/cves/CVE-2026-74624","el":"https://www.redsauce.net/el/cves/CVE-2026-74624"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-74624"}}