{"id":"DEBIAN-CVE-2024-50038","details":"In the Linux kernel, the following vulnerability has been resolved:  netfilter: xtables: avoid NFPROTO_UNSPEC where needed  syzbot managed to call xt_cluster match via ebtables:   WARNING: CPU: 0 PID: 11 at net/netfilter/xt_cluster.c:72 xt_cluster_mt+0x196/0x780  [..]  ebt_do_table+0x174b/0x2a40  Module registers to NFPROTO_UNSPEC, but it assumes ipv4/ipv6 packet processing.  As this is only useful to restrict locally terminating TCP/UDP traffic, register this for ipv4 and ipv6 family only.  Pablo points out that this is a general issue, direct users of the set/getsockopt interface can call into targets/matches that were only intended for use with ip(6)tables.  Check all UNSPEC matches and targets for similar issues:  - matches and targets are fine except if they assume skb_network_header()   is valid -- this is only true when called from inet layer: ip(6) stack   pulls the ip/ipv6 header into linear data area. - targets that return XT_CONTINUE or other xtables verdicts must be   restricted too, they are incompatbile with the ebtables traverser, e.g.   EBT_CONTINUE is a completely different value than XT_CONTINUE.  Most matches/targets are changed to register for NFPROTO_IPV4/IPV6, as they are provided for use by ip(6)tables.  The MARK target is also used by arptables, so register for NFPROTO_ARP too.  While at it, bail out if connbytes fails to enable the corresponding conntrack family.  This change passes the selftests in iptables.git.","modified":"2026-09-15T09:03:15.404474693Z","published":"2024-10-21T20:15:16.877Z","upstream":["CVE-2024-50038"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2024-50038"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.115-1"}]}],"versions":["6.1.106-1","6.1.106-2","6.1.106-3","6.1.112-1","6.1.27-1","6.1.37-1","6.1.38-1","6.1.38-2","6.1.38-2~bpo11+1","6.1.38-3","6.1.38-4","6.1.38-4~bpo11+1","6.1.52-1","6.1.55-1","6.1.55-1~bpo11+1","6.1.64-1","6.1.66-1","6.1.67-1","6.1.69-1","6.1.69-1~bpo11+1","6.1.76-1","6.1.76-1~bpo11+1","6.1.82-1","6.1.85-1","6.1.90-1","6.1.90-1~bpo11+1","6.1.94-1","6.1.94-1~bpo11+1","6.1.98-1","6.1.99-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2024-50038.json"}},{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.11.4-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2024-50038.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.11.4-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2024-50038.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}