{"id":"CVE-2022-49877","title":"bpf, sockmap: Fix the sk->sk_forward_alloc warning of sk_stream_kill_queues","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf, sockmap: Fix the sk->sk_forward_alloc warning of sk_stream_kill_queues\n\nWhen running `test_sockmap` selftests, the following warning appears:\n\n  WARNING: CPU: 2 PI…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 244ce90c8d0bd10ebf957da02c6f3fcd5d920bdf < d975bec1eaeb52341acc9273db79ddb078220399","Linux >= 7b812a369e6416ab06d83cdd39d8e3f752781dd0 < cc21dc48a78cc9e5af9a4d039cd456446a6e73ff","Linux >= 168ff181f5b6e7fce684c98a30d35da1dbf8f82a < 95adbd2ac8de82e43fd6b347e7e1b47f74dc1abb","Linux >= 84472b436e760ba439e1969a9e3c5ae7c86de39d < 14e8bc3bf7bd6af64d7538a0684c8238d96cdfd7","Linux >= 84472b436e760ba439e1969a9e3c5ae7c86de39d < 8ec95b94716a1e4d126edc3fb2bc426a717e2dba","Linux 87d532d41ef937e16f61b3d2094f3a2ac49be365","Linux abb4caa477a5450817d2aa1198edce66450aecf8","Linux >= 5.4.189 < 5.4.225","Linux >= 5.10.110 < 5.10.155","Linux >= 5.15.33 < 5.15.79","Linux >= 5.16.19 < 5.17","Linux >= 5.17.2 < 5.18","Linux 5.18"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-05T19:51:01.780618Z"},"published":"2025-05-01","updated":"2026-11-05","sourceUpdated":"2026-11-05T20:00:10.483Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2022-49877","references":[{"url":"https://git.kernel.org/stable/c/d975bec1eaeb52341acc9273db79ddb078220399"},{"url":"https://git.kernel.org/stable/c/cc21dc48a78cc9e5af9a4d039cd456446a6e73ff"},{"url":"https://git.kernel.org/stable/c/95adbd2ac8de82e43fd6b347e7e1b47f74dc1abb"},{"url":"https://git.kernel.org/stable/c/14e8bc3bf7bd6af64d7538a0684c8238d96cdfd7"},{"url":"https://git.kernel.org/stable/c/8ec95b94716a1e4d126edc3fb2bc426a717e2dba"}],"tags":["cve.org"],"epss":0.00202,"epssPercentile":0.10139,"ingestedAt":"2026-11-05T22:38:31.621Z","slug":"CVE-2022-49877","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nbpf, sockmap: Fix the sk->sk_forward_alloc warning of sk_stream_kill_queues\n\nWhen running `test_sockmap` selftests, the following warning appears:\n\n  WARNING: CPU: 2 PID: 197 at net/core/stream.c:205 sk_stream_kill_queues+0xd3/0xf0\n  Call Trace:\n  <TASK>\n  inet_csk_destroy_sock+0x55/0x110\n  tcp_rcv_state_process+0xd28/0x1380\n  ? tcp_v4_do_rcv+0x77/0x2c0\n  tcp_v4_do_rcv+0x77/0x2c0\n  __release_sock+0x106/0x130\n  __tcp_close+0x1a7/0x4e0\n  tcp_close+0x20/0x70\n  inet_release+0x3c/0x80\n  __sock_release+0x3a/0xb0\n  sock_close+0x14/0x20\n  __fput+0xa3/0x260\n  task_work_run+0x59/0xb0\n  exit_to_user_mode_prepare+0x1b3/0x1c0\n  syscall_exit_to_user_mode+0x19/0x50\n  do_syscall_64+0x48/0x90\n  entry_SYSCALL_64_after_hwframe+0x44/0xae\n\nThe root case is in commit 84472b436e76 (\"bpf, sockmap: Fix more uncharged\nwhile msg has more_data\"), where I used msg->sg.size to replace the tosend,\ncausing breakage:\n\n  if (msg->apply_bytes && msg->apply_bytes < tosend)\n    tosend = psock->apply_bytes;\n\n## Affected\n\n- `Linux >= 244ce90c8d0bd10ebf957da02c6f3fcd5d920bdf < d975bec1eaeb52341acc9273db79ddb078220399`\n- `Linux >= 7b812a369e6416ab06d83cdd39d8e3f752781dd0 < cc21dc48a78cc9e5af9a4d039cd456446a6e73ff`\n- `Linux >= 168ff181f5b6e7fce684c98a30d35da1dbf8f82a < 95adbd2ac8de82e43fd6b347e7e1b47f74dc1abb`\n- `Linux >= 84472b436e760ba439e1969a9e3c5ae7c86de39d < 14e8bc3bf7bd6af64d7538a0684c8238d96cdfd7`\n- `Linux >= 84472b436e760ba439e1969a9e3c5ae7c86de39d < 8ec95b94716a1e4d126edc3fb2bc426a717e2dba`\n- `Linux 87d532d41ef937e16f61b3d2094f3a2ac49be365`\n- `Linux abb4caa477a5450817d2aa1198edce66450aecf8`\n- `Linux >= 5.4.189 < 5.4.225`\n- `Linux >= 5.10.110 < 5.10.155`\n- `Linux >= 5.15.33 < 5.15.79`\n- `Linux >= 5.16.19 < 5.17`\n- `Linux >= 5.17.2 < 5.18`\n- `Linux 5.18`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}