{"id":"CVE-2022-49207","state":"PUBLISHED","title":"bpf, sockmap: Fix memleak in sk_psock_queue_msg","description":"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 <IRQ>\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 </IRQ>\n\nWARNING: CPU: 0 PID: 531 at net/ipv4/af_inet.c:154 inet_sock_destruct+0x175/0x1b0\nCall Trace:\n <TASK>\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 </TASK>","publishedAt":"2025-02-26T01:55:46.177Z","updatedAt":"2026-05-11T18:55:13.064Z","severity":{"score":5.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","source":"CISA-ADP"},"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"9635720b7c88592214562cb72605bdab6708006c","status":"affected","lessThan":"ef9785f429794567792561a584901faa9291d3ee","versionType":"git"},{"version":"9635720b7c88592214562cb72605bdab6708006c","status":"affected","lessThan":"4dd2e947d3be13a4de3b3028859b9a6497266bcf","versionType":"git"},{"version":"9635720b7c88592214562cb72605bdab6708006c","status":"affected","lessThan":"03948ed6553960db62f1c33bec29e64d7c191a3f","versionType":"git"},{"version":"9635720b7c88592214562cb72605bdab6708006c","status":"affected","lessThan":"938d3480b92fa5e454b7734294f12a7b75126f09","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["include/linux/skmsg.h"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.14","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.14","versionType":"semver"},{"version":"5.15.33","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.16.19","status":"unaffected","lessThanOrEqual":"5.16.*","versionType":"semver"},{"version":"5.17.2","status":"unaffected","lessThanOrEqual":"5.17.*","versionType":"semver"},{"version":"5.18","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["include/linux/skmsg.h"]}],"references":["https://git.kernel.org/stable/c/ef9785f429794567792561a584901faa9291d3ee","https://git.kernel.org/stable/c/4dd2e947d3be13a4de3b3028859b9a6497266bcf","https://git.kernel.org/stable/c/03948ed6553960db62f1c33bec29e64d7c191a3f","https://git.kernel.org/stable/c/938d3480b92fa5e454b7734294f12a7b75126f09"],"weaknesses":["CWE-401"],"ingestedAt":"2026-10-29T20:05:26.763Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2022/49xxx/CVE-2022-49207.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-49207","state":"PUBLISHED","datePublished":"2025-02-26T01:55:46.177Z","dateUpdated":"2026-05-11T18:55:13.064Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-02-26T01:49:39.291Z"},"containers":{"cna":{"title":"bpf, sockmap: Fix memleak in sk_psock_queue_msg","descriptions":[{"lang":"en","value":"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 <IRQ>\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 </IRQ>\n\nWARNING: CPU: 0 PID: 531 at net/ipv4/af_inet.c:154 inet_sock_destruct+0x175/0x1b0\nCall Trace:\n <TASK>\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 </TASK>"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"9635720b7c88592214562cb72605bdab6708006c","status":"affected","lessThan":"ef9785f429794567792561a584901faa9291d3ee","versionType":"git"},{"version":"9635720b7c88592214562cb72605bdab6708006c","status":"affected","lessThan":"4dd2e947d3be13a4de3b3028859b9a6497266bcf","versionType":"git"},{"version":"9635720b7c88592214562cb72605bdab6708006c","status":"affected","lessThan":"03948ed6553960db62f1c33bec29e64d7c191a3f","versionType":"git"},{"version":"9635720b7c88592214562cb72605bdab6708006c","status":"affected","lessThan":"938d3480b92fa5e454b7734294f12a7b75126f09","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["include/linux/skmsg.h"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.14","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.14","versionType":"semver"},{"version":"5.15.33","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.16.19","status":"unaffected","lessThanOrEqual":"5.16.*","versionType":"semver"},{"version":"5.17.2","status":"unaffected","lessThanOrEqual":"5.17.*","versionType":"semver"},{"version":"5.18","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["include/linux/skmsg.h"]}],"references":[{"url":"https://git.kernel.org/stable/c/ef9785f429794567792561a584901faa9291d3ee"},{"url":"https://git.kernel.org/stable/c/4dd2e947d3be13a4de3b3028859b9a6497266bcf"},{"url":"https://git.kernel.org/stable/c/03948ed6553960db62f1c33bec29e64d7c191a3f"},{"url":"https://git.kernel.org/stable/c/938d3480b92fa5e454b7734294f12a7b75126f09"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T18:55:13.064Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","versionEndExcluding":"5.15.33"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","versionEndExcluding":"5.16.19"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","versionEndExcluding":"5.17.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","versionEndExcluding":"5.18"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":5.5,"attackVector":"LOCAL","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"LOW","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"id":"CVE-2022-49207","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2025-10-01T19:47:03.450960Z"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-401","lang":"en","type":"CWE","description":"CWE-401 Missing Release of Memory after Effective Lifetime"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-10-01T19:47:06.855Z"}}]}}}