{"id":"CVE-2022-49207","summary":"bpf, sockmap: Fix memleak in sk_psock_queue_msg","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf, sockmap: Fix memleak in sk_psock_queue_msg\n\nIf tcp_bpf_sendmsg is running during a tear down operation we may enqueue\ndata on the ingress msg queue while tear down is trying to free it.\n\n sk1 (redirect sk2)                         sk2\n -------------------                      ---------------\ntcp_bpf_sendmsg()\n tcp_bpf_send_verdict()\n  tcp_bpf_sendmsg_redir()\n   bpf_tcp_ingress()\n                                          sock_map_close()\n                                           lock_sock()\n    lock_sock() ... blocking\n                                           sk_psock_stop\n                                            sk_psock_clear_state(psock, SK_PSOCK_TX_ENABLED);\n                                           release_sock(sk);\n    lock_sock()\n    sk_mem_charge()\n    get_page()\n    sk_psock_queue_msg()\n     sk_psock_test_state(psock, SK_PSOCK_TX_ENABLED);\n      drop_sk_msg()\n    release_sock()\n\nWhile drop_sk_msg(), the msg has charged memory form sk by sk_mem_charge\nand has sg pages need to put. To fix we use sk_msg_free() and then kfee()\nmsg.\n\nThis issue can cause the following info:\nWARNING: CPU: 0 PID: 9202 at net/core/stream.c:205 sk_stream_kill_queues+0xc8/0xe0\nCall Trace:\n \u003cIRQ\u003e\n inet_csk_destroy_sock+0x55/0x110\n tcp_rcv_state_process+0xe5f/0xe90\n ? sk_filter_trim_cap+0x10d/0x230\n ? tcp_v4_do_rcv+0x161/0x250\n tcp_v4_do_rcv+0x161/0x250\n tcp_v4_rcv+0xc3a/0xce0\n ip_protocol_deliver_rcu+0x3d/0x230\n ip_local_deliver_finish+0x54/0x60\n ip_local_deliver+0xfd/0x110\n ? ip_protocol_deliver_rcu+0x230/0x230\n ip_rcv+0xd6/0x100\n ? ip_local_deliver+0x110/0x110\n __netif_receive_skb_one_core+0x85/0xa0\n process_backlog+0xa4/0x160\n __napi_poll+0x29/0x1b0\n net_rx_action+0x287/0x300\n __do_softirq+0xff/0x2fc\n do_softirq+0x79/0x90\n \u003c/IRQ\u003e\n\nWARNING: CPU: 0 PID: 531 at net/ipv4/af_inet.c:154 inet_sock_destruct+0x175/0x1b0\nCall Trace:\n \u003cTASK\u003e\n __sk_destruct+0x24/0x1f0\n sk_psock_destroy+0x19b/0x1c0\n process_one_work+0x1b3/0x3c0\n ? process_one_work+0x3c0/0x3c0\n worker_thread+0x30/0x350\n ? process_one_work+0x3c0/0x3c0\n kthread+0xe6/0x110\n ? kthread_complete_and_exit+0x20/0x20\n ret_from_fork+0x22/0x30\n \u003c/TASK\u003e","modified":"2026-04-11T11:56:36.844842Z","published":"2025-02-26T01:55:46.177Z","related":["SUSE-SU-2025:1176-1","SUSE-SU-2025:1241-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49207.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/03948ed6553960db62f1c33bec29e64d7c191a3f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/4dd2e947d3be13a4de3b3028859b9a6497266bcf"},{"type":"WEB","url":"https://git.kernel.org/stable/c/938d3480b92fa5e454b7734294f12a7b75126f09"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ef9785f429794567792561a584901faa9291d3ee"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49207.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-49207"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"9635720b7c88592214562cb72605bdab6708006c"},{"fixed":"ef9785f429794567792561a584901faa9291d3ee"},{"fixed":"4dd2e947d3be13a4de3b3028859b9a6497266bcf"},{"fixed":"03948ed6553960db62f1c33bec29e64d7c191a3f"},{"fixed":"938d3480b92fa5e454b7734294f12a7b75126f09"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-49207.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.14.0"},{"fixed":"5.15.33"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"5.16.19"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.17.0"},{"fixed":"5.17.2"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-49207.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}