{"id":"DEBIAN-CVE-2022-49838","details":"In the Linux kernel, the following vulnerability has been resolved:  sctp: clear out_curr if all frag chunks of current msg are pruned  A crash was reported by Zhen Chen:    list_del corruption, ffffa035ddf01c18-\u003enext is NULL   WARNING: CPU: 1 PID: 250682 at lib/list_debug.c:49 __list_del_entry_valid+0x59/0xe0   RIP: 0010:__list_del_entry_valid+0x59/0xe0   Call Trace:    sctp_sched_dequeue_common+0x17/0x70 [sctp]    sctp_sched_fcfs_dequeue+0x37/0x50 [sctp]    sctp_outq_flush_data+0x85/0x360 [sctp]    sctp_outq_uncork+0x77/0xa0 [sctp]    sctp_cmd_interpreter.constprop.0+0x164/0x1450 [sctp]    sctp_side_effects+0x37/0xe0 [sctp]    sctp_do_sm+0xd0/0x230 [sctp]    sctp_primitive_SEND+0x2f/0x40 [sctp]    sctp_sendmsg_to_asoc+0x3fa/0x5c0 [sctp]    sctp_sendmsg+0x3d5/0x440 [sctp]    sock_sendmsg+0x5b/0x70  and in sctp_sched_fcfs_dequeue() it dequeued a chunk from stream out_curr outq while this outq was empty.  Normally stream-\u003eout_curr must be set to NULL once all frag chunks of current msg are dequeued, as we can see in sctp_sched_dequeue_done(). However, in sctp_prsctp_prune_unsent() as it is not a proper dequeue, sctp_sched_dequeue_done() is not called to do this.  This patch is to fix it by simply setting out_curr to NULL when the last frag chunk of current msg is dequeued from out_curr stream in sctp_prsctp_prune_unsent().","modified":"2026-09-01T16:05:33.508880658Z","published":"2025-05-01T15:16:07.290Z","upstream":["CVE-2022-49838"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2022-49838"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.10-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-49838.json"}},{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.10-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-49838.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.10-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-49838.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"}]}