FKIE_CVE-2024-56694

Vulnerability from fkie_nvd - Published: 2024-12-28 10:15 - Updated: 2025-11-03 21:18
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: fix recursive lock when verdict program return SK_PASS When the stream_verdict program returns SK_PASS, it places the received skb into its own receive queue, but a recursive lock eventually occurs, leading to an operating system deadlock. This issue has been present since v6.9. ''' sk_psock_strp_data_ready write_lock_bh(&sk->sk_callback_lock) strp_data_ready strp_read_sock read_sock -> tcp_read_sock strp_recv cb.rcv_msg -> sk_psock_strp_read # now stream_verdict return SK_PASS without peer sock assign __SK_PASS = sk_psock_map_verd(SK_PASS, NULL) sk_psock_verdict_apply sk_psock_skb_ingress_self sk_psock_skb_ingress_enqueue sk_psock_data_ready read_lock_bh(&sk->sk_callback_lock) <= dead lock ''' This topic has been discussed before, but it has not been fixed. Previous discussion: https://lore.kernel.org/all/6684a5864ec86_403d20898@john.notmuch
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/01f1b88acfd79103da0610b45471f6c88ea98d72Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/221109ba2127eabd0aa64718543638b58b15df56
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/386efa339e08563dd33e83bc951aea5d407fe578Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6694f7acd625ed854bf6342926e771d65dad7f69Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8ca2a1eeadf09862190b2810697702d803ceef2dPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/da2bc8a0c8f3ac66fdf980fc59936f851a083561Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f84c5ef6ca23cc2f72f3b830d74f67944684bb05Patch
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
To clipboard 

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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: fix recursive lock when verdict program return SK_PASS\n\nWhen the stream_verdict program returns SK_PASS, it places the received skb\ninto its own receive queue, but a recursive lock eventually occurs, leading\nto an operating system deadlock. This issue has been present since v6.9.\n\n\u0027\u0027\u0027\nsk_psock_strp_data_ready\n    write_lock_bh(\u0026sk-\u003esk_callback_lock)\n    strp_data_ready\n      strp_read_sock\n        read_sock -\u003e tcp_read_sock\n          strp_recv\n            cb.rcv_msg -\u003e sk_psock_strp_read\n              # now stream_verdict return SK_PASS without peer sock assign\n              __SK_PASS = sk_psock_map_verd(SK_PASS, NULL)\n              sk_psock_verdict_apply\n                sk_psock_skb_ingress_self\n                  sk_psock_skb_ingress_enqueue\n                    sk_psock_data_ready\n                      read_lock_bh(\u0026sk-\u003esk_callback_lock) \u003c= dead lock\n\n\u0027\u0027\u0027\n\nThis topic has been discussed before, but it has not been fixed.\nPrevious discussion:\nhttps://lore.kernel.org/all/6684a5864ec86_403d20898@john.notmuch"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: bpf: se corrige el bloqueo recursivo cuando el programa de veredicto devuelve SK_PASS Cuando el programa stream_verdict devuelve SK_PASS, coloca el skb recibido en su propia cola de recepci\u00f3n, pero finalmente se produce un bloqueo recursivo que provoca un bloqueo del sistema operativo. Este problema ha estado presente desde la versi\u00f3n v6.9. \u0027\u0027\u0027 sk_psock_strp_data_ready write_lock_bh(\u0026amp;sk-\u0026gt;sk_callback_lock) strp_data_ready strp_read_sock read_sock -\u0026gt; tcp_read_sock strp_recv cb.rcv_msg -\u0026gt; sk_psock_strp_read # ahora stream_verdict devuelve SK_PASS sin asignaci\u00f3n de sock de pares __SK_PASS = sk_psock_map_verd(SK_PASS, NULL) sk_psock_verdict_apply sk_psock_skb_ingress_self sk_psock_skb_ingress_enqueue sk_psock_data_ready read_lock_bh(\u0026amp;sk-\u0026gt;sk_callback_lock) \u0026lt;= bloqueo muerto \u0027\u0027\u0027 Este tema se ha discutido antes, pero no se ha solucionado. Discusi\u00f3n anterior: https://lore.kernel.org/all/6684a5864ec86_403d20898@john.notmuch"
    }
  ],
  "id": "CVE-2024-56694",
  "lastModified": "2025-11-03T21:18:20.400",
  "metrics": {
    "cvssMetricV31": [
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        "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",
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  "published": "2024-12-28T10:15:15.203",
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  "vulnStatus": "Modified",
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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.