{"affected":[{"defaultStatus":"unaffected","product":"Linux","source":"CNA: Linux","vendor":"Linux","versions":[{"lessThan":"e27458b18b35caee4b27b37a4a9c503b93cae5cc","status":"affected","version":"5bbbbe32a43199c2b9ea5ea66fab6241c64beb51","versionType":"git"},{"lessThan":"2ea600b598dd3e061854dd4dd5b4c815397dfcea","status":"affected","version":"5bbbbe32a43199c2b9ea5ea66fab6241c64beb51","versionType":"git"},{"lessThan":"3eff34e01062ec08fbb45ce2baaaa644550be821","status":"affected","version":"5bbbbe32a43199c2b9ea5ea66fab6241c64beb51","versionType":"git"},{"lessThan":"2f201ae14ae0f91dbf1cffea7bb1e29e81d4d108","status":"affected","version":"5bbbbe32a43199c2b9ea5ea66fab6241c64beb51","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","source":"CNA: Linux","vendor":"Linux","versions":[{"status":"affected","version":"4.15"},{"lessThan":"4.15","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.156","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.81","versionType":"semver"},{"lessThanOrEqual":"6.0.*","status":"unaffected","version":"6.0.10","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"6.1","versionType":"original_commit_for_fix"}]}],"cveId":"CVE-2022-49838","cwes":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nsctp: clear out_curr if all frag chunks of current msg are pruned\n\nA crash was reported by Zhen Chen:\n\n  list_del corruption, ffffa035ddf01c18->next is NULL\n  WARNING: CPU: 1 PID: 250682 at lib/list_debug.c:49 __list_del_entry_valid+0x59/0xe0\n  RIP: 0010:__list_del_entry_valid+0x59/0xe0\n  Call Trace:\n   sctp_sched_dequeue_common+0x17/0x70 [sctp]\n   sctp_sched_fcfs_dequeue+0x37/0x50 [sctp]\n   sctp_outq_flush_data+0x85/0x360 [sctp]\n   sctp_outq_uncork+0x77/0xa0 [sctp]\n   sctp_cmd_interpreter.constprop.0+0x164/0x1450 [sctp]\n   sctp_side_effects+0x37/0xe0 [sctp]\n   sctp_do_sm+0xd0/0x230 [sctp]\n   sctp_primitive_SEND+0x2f/0x40 [sctp]\n   sctp_sendmsg_to_asoc+0x3fa/0x5c0 [sctp]\n   sctp_sendmsg+0x3d5/0x440 [sctp]\n   sock_sendmsg+0x5b/0x70\n\nand in sctp_sched_fcfs_dequeue() it dequeued a chunk from stream\nout_curr outq while this outq was empty.\n\nNormally stream->out_curr must be set to NULL once all frag chunks of\ncurrent msg are dequeued, as we can see in sctp_sched_dequeue_done().\nHowever, in sctp_prsctp_prune_unsent() as it is not a proper dequeue,\nsctp_sched_dequeue_done() is not called to do this.\n\nThis patch is to fix it by simply setting out_curr to NULL when the\nlast frag chunk of current msg is dequeued from out_curr stream in\nsctp_prsctp_prune_unsent().","epss":{"date":"2026-11-05","percentile":0.12,"score":0.00215},"exploits":[],"kev":null,"metrics":[],"modifiedAt":1793908809460,"publishedAt":1746108594816,"references":[{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/e27458b18b35caee4b27b37a4a9c503b93cae5cc"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/2ea600b598dd3e061854dd4dd5b4c815397dfcea"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/3eff34e01062ec08fbb45ce2baaaa644550be821"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/2f201ae14ae0f91dbf1cffea7bb1e29e81d4d108"}],"remediation":[],"revision":"49b38666f807c722d6e3abff06a23e655e2bff56660299082eefd681aa03331c","sources":[{"modifiedAt":1793908809460,"name":"CNA: Linux","retrievedAt":1793909466307,"url":"https://www.cve.org/CVERecord?id=CVE-2022-49838"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1793909485680,"url":"https://api.first.org/data/v1/epss?cve=CVE-2022-49838"}],"ssvc":{"assessedAt":1793908240509,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"sctp: clear out_curr if all frag chunks of current msg are pruned","updatedAt":1793909485680}