{"id":"DEBIAN-CVE-2022-50243","details":"In the Linux kernel, the following vulnerability has been resolved:  sctp: handle the error returned from sctp_auth_asoc_init_active_key  When it returns an error from sctp_auth_asoc_init_active_key(), the active_key is actually not updated. The old sh_key will be freeed while it's still used as active key in asoc. Then an use-after-free will be triggered when sending patckets, as found by syzbot:    sctp_auth_shkey_hold+0x22/0xa0 net/sctp/auth.c:112   sctp_set_owner_w net/sctp/socket.c:132 [inline]   sctp_sendmsg_to_asoc+0xbd5/0x1a20 net/sctp/socket.c:1863   sctp_sendmsg+0x1053/0x1d50 net/sctp/socket.c:2025   inet_sendmsg+0x99/0xe0 net/ipv4/af_inet.c:819   sock_sendmsg_nosec net/socket.c:714 [inline]   sock_sendmsg+0xcf/0x120 net/socket.c:734  This patch is to fix it by not replacing the sh_key when it returns errors from sctp_auth_asoc_init_active_key() in sctp_auth_set_key(). For sctp_auth_set_active_key(), old active_key_id will be set back to asoc-\u003eactive_key_id when the same thing happens.","modified":"2026-09-01T16:05:35.140556872Z","published":"2025-09-15T14:15:34.620Z","upstream":["CVE-2022-50243"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2022-50243"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.3-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-50243.json"}},{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.3-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-50243.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.3-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-50243.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:H/I:H/A:H"}]}