FKIE_CVE-2022-49877

Vulnerability from fkie_nvd - Published: 2025-05-01 15:16 - Updated: 2025-11-10 21:05
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: Fix the sk->sk_forward_alloc warning of sk_stream_kill_queues When running `test_sockmap` selftests, the following warning appears: WARNING: CPU: 2 PID: 197 at net/core/stream.c:205 sk_stream_kill_queues+0xd3/0xf0 Call Trace: <TASK> inet_csk_destroy_sock+0x55/0x110 tcp_rcv_state_process+0xd28/0x1380 ? tcp_v4_do_rcv+0x77/0x2c0 tcp_v4_do_rcv+0x77/0x2c0 __release_sock+0x106/0x130 __tcp_close+0x1a7/0x4e0 tcp_close+0x20/0x70 inet_release+0x3c/0x80 __sock_release+0x3a/0xb0 sock_close+0x14/0x20 __fput+0xa3/0x260 task_work_run+0x59/0xb0 exit_to_user_mode_prepare+0x1b3/0x1c0 syscall_exit_to_user_mode+0x19/0x50 do_syscall_64+0x48/0x90 entry_SYSCALL_64_after_hwframe+0x44/0xae The root case is in commit 84472b436e76 ("bpf, sockmap: Fix more uncharged while msg has more_data"), where I used msg->sg.size to replace the tosend, causing breakage: if (msg->apply_bytes && msg->apply_bytes < tosend) tosend = psock->apply_bytes;
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/14e8bc3bf7bd6af64d7538a0684c8238d96cdfd7Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8ec95b94716a1e4d126edc3fb2bc426a717e2dbaPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/95adbd2ac8de82e43fd6b347e7e1b47f74dc1abbPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/cc21dc48a78cc9e5af9a4d039cd456446a6e73ffPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d975bec1eaeb52341acc9273db79ddb078220399Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.1
linux linux_kernel 6.1
linux linux_kernel 6.1
linux linux_kernel 6.1
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf, sockmap: Fix the sk-\u003esk_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  \u003cTASK\u003e\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-\u003esg.size to replace the tosend,\ncausing breakage:\n\n  if (msg-\u003eapply_bytes \u0026\u0026 msg-\u003eapply_bytes \u003c tosend)\n    tosend = psock-\u003eapply_bytes;"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: bpf, sockmap: corrige la advertencia sk-\u0026gt;sk_forward_alloc de sk_stream_kill_queues Al ejecutar las pruebas autom\u00e1ticas `test_sockmap`, aparece la siguiente advertencia: ADVERTENCIA: CPU: 2 PID: 197 en net/core/stream.c:205 sk_stream_kill_queues+0xd3/0xf0 Seguimiento de llamadas:   inet_csk_destroy_sock+0x55/0x110 tcp_rcv_state_process+0xd28/0x1380 ? tcp_v4_do_rcv+0x77/0x2c0 tcp_v4_do_rcv+0x77/0x2c0 __release_sock+0x106/0x130 __tcp_close+0x1a7/0x4e0 tcp_close+0x20/0x70 inet_release+0x3c/0x80 __sock_release+0x3a/0xb0 sock_close+0x14/0x20 __fput+0xa3/0x260 task_work_run+0x59/0xb0 exit_to_user_mode_prepare+0x1b3/0x1c0 syscall_exit_to_user_mode+0x19/0x50 do_syscall_64+0x48/0x90 entry_SYSCALL_64_after_hwframe+0x44/0xae El caso ra\u00edz est\u00e1 en el commit 84472b436e76 (\"bpf, sockmap: Arreglar m\u00e1s archivos no cargados mientras msg tiene more_data\"), donde utilic\u00e9 msg-\u0026gt;sg.size para reemplazar tosend, lo que caus\u00f3 fallas: if (msg-\u0026gt;apply_bytes \u0026amp;\u0026amp; msg-\u0026gt;apply_bytes \u0026lt; tosend) tosend = psock-\u0026gt;apply_bytes;"
    }
  ],
  "id": "CVE-2022-49877",
  "lastModified": "2025-11-10T21:05:50.070",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
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  "published": "2025-05-01T15:16:12.653",
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  "vulnStatus": "Analyzed",
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}


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