FKIE_CVE-2024-46783

Vulnerability from fkie_nvd - Published: 2024-09-18 08:15 - Updated: 2025-11-03 23:16
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: tcp_bpf: fix return value of tcp_bpf_sendmsg() When we cork messages in psock->cork, the last message triggers the flushing will result in sending a sk_msg larger than the current message size. In this case, in tcp_bpf_send_verdict(), 'copied' becomes negative at least in the following case: 468 case __SK_DROP: 469 default: 470 sk_msg_free_partial(sk, msg, tosend); 471 sk_msg_apply_bytes(psock, tosend); 472 *copied -= (tosend + delta); // <==== HERE 473 return -EACCES; Therefore, it could lead to the following BUG with a proper value of 'copied' (thanks to syzbot). We should not use negative 'copied' as a return value here. ------------[ cut here ]------------ kernel BUG at net/socket.c:733! Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP Modules linked in: CPU: 0 UID: 0 PID: 3265 Comm: syz-executor510 Not tainted 6.11.0-rc3-syzkaller-00060-gd07b43284ab3 #0 Hardware name: linux,dummy-virt (DT) pstate: 61400009 (nZCv daif +PAN -UAO -TCO +DIT -SSBS BTYPE=--) pc : sock_sendmsg_nosec net/socket.c:733 [inline] pc : sock_sendmsg_nosec net/socket.c:728 [inline] pc : __sock_sendmsg+0x5c/0x60 net/socket.c:745 lr : sock_sendmsg_nosec net/socket.c:730 [inline] lr : __sock_sendmsg+0x54/0x60 net/socket.c:745 sp : ffff800088ea3b30 x29: ffff800088ea3b30 x28: fbf00000062bc900 x27: 0000000000000000 x26: ffff800088ea3bc0 x25: ffff800088ea3bc0 x24: 0000000000000000 x23: f9f00000048dc000 x22: 0000000000000000 x21: ffff800088ea3d90 x20: f9f00000048dc000 x19: ffff800088ea3d90 x18: 0000000000000001 x17: 0000000000000000 x16: 0000000000000000 x15: 000000002002ffaf x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000000000 x10: ffff8000815849c0 x9 : ffff8000815b49c0 x8 : 0000000000000000 x7 : 000000000000003f x6 : 0000000000000000 x5 : 00000000000007e0 x4 : fff07ffffd239000 x3 : fbf00000062bc900 x2 : 0000000000000000 x1 : 0000000000000000 x0 : 00000000fffffdef Call trace: sock_sendmsg_nosec net/socket.c:733 [inline] __sock_sendmsg+0x5c/0x60 net/socket.c:745 ____sys_sendmsg+0x274/0x2ac net/socket.c:2597 ___sys_sendmsg+0xac/0x100 net/socket.c:2651 __sys_sendmsg+0x84/0xe0 net/socket.c:2680 __do_sys_sendmsg net/socket.c:2689 [inline] __se_sys_sendmsg net/socket.c:2687 [inline] __arm64_sys_sendmsg+0x24/0x30 net/socket.c:2687 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x48/0x110 arch/arm64/kernel/syscall.c:49 el0_svc_common.constprop.0+0x40/0xe0 arch/arm64/kernel/syscall.c:132 do_el0_svc+0x1c/0x28 arch/arm64/kernel/syscall.c:151 el0_svc+0x34/0xec arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x100/0x12c arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x19c/0x1a0 arch/arm64/kernel/entry.S:598 Code: f9404463 d63f0060 3108441f 54fffe81 (d4210000) ---[ end trace 0000000000000000 ]---
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/126d72b726c4cf1119f3a7fe413a78d341c3fea9Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3efe53eb221a38e207c1e3f81c51e4ca057d50c2Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6f9fdf5806cced888c43512bccbdf7fefd50f510Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/78bb38d9c5a311c5f8bdef7c9557d7d81ca30e4aPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/810a4e7d92dea4074cb04c25758320909d752193Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c8219a27fa43a2cbf99f5176f6dddfe73e7a24aePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fe1910f9337bd46a9343967b547ccab26b4b2c6ePatch
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.11
linux linux_kernel 6.11
linux linux_kernel 6.11
linux linux_kernel 6.11
linux linux_kernel 6.11
linux linux_kernel 6.11
To clipboard 

{
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntcp_bpf: fix return value of tcp_bpf_sendmsg()\n\nWhen we cork messages in psock-\u003ecork, the last message triggers the\nflushing will result in sending a sk_msg larger than the current\nmessage size. In this case, in tcp_bpf_send_verdict(), \u0027copied\u0027 becomes\nnegative at least in the following case:\n\n468         case __SK_DROP:\n469         default:\n470                 sk_msg_free_partial(sk, msg, tosend);\n471                 sk_msg_apply_bytes(psock, tosend);\n472                 *copied -= (tosend + delta); // \u003c==== HERE\n473                 return -EACCES;\n\nTherefore, it could lead to the following BUG with a proper value of\n\u0027copied\u0027 (thanks to syzbot). We should not use negative \u0027copied\u0027 as a\nreturn value here.\n\n  ------------[ cut here ]------------\n  kernel BUG at net/socket.c:733!\n  Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP\n  Modules linked in:\n  CPU: 0 UID: 0 PID: 3265 Comm: syz-executor510 Not tainted 6.11.0-rc3-syzkaller-00060-gd07b43284ab3 #0\n  Hardware name: linux,dummy-virt (DT)\n  pstate: 61400009 (nZCv daif +PAN -UAO -TCO +DIT -SSBS BTYPE=--)\n  pc : sock_sendmsg_nosec net/socket.c:733 [inline]\n  pc : sock_sendmsg_nosec net/socket.c:728 [inline]\n  pc : __sock_sendmsg+0x5c/0x60 net/socket.c:745\n  lr : sock_sendmsg_nosec net/socket.c:730 [inline]\n  lr : __sock_sendmsg+0x54/0x60 net/socket.c:745\n  sp : ffff800088ea3b30\n  x29: ffff800088ea3b30 x28: fbf00000062bc900 x27: 0000000000000000\n  x26: ffff800088ea3bc0 x25: ffff800088ea3bc0 x24: 0000000000000000\n  x23: f9f00000048dc000 x22: 0000000000000000 x21: ffff800088ea3d90\n  x20: f9f00000048dc000 x19: ffff800088ea3d90 x18: 0000000000000001\n  x17: 0000000000000000 x16: 0000000000000000 x15: 000000002002ffaf\n  x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000\n  x11: 0000000000000000 x10: ffff8000815849c0 x9 : ffff8000815b49c0\n  x8 : 0000000000000000 x7 : 000000000000003f x6 : 0000000000000000\n  x5 : 00000000000007e0 x4 : fff07ffffd239000 x3 : fbf00000062bc900\n  x2 : 0000000000000000 x1 : 0000000000000000 x0 : 00000000fffffdef\n  Call trace:\n   sock_sendmsg_nosec net/socket.c:733 [inline]\n   __sock_sendmsg+0x5c/0x60 net/socket.c:745\n   ____sys_sendmsg+0x274/0x2ac net/socket.c:2597\n   ___sys_sendmsg+0xac/0x100 net/socket.c:2651\n   __sys_sendmsg+0x84/0xe0 net/socket.c:2680\n   __do_sys_sendmsg net/socket.c:2689 [inline]\n   __se_sys_sendmsg net/socket.c:2687 [inline]\n   __arm64_sys_sendmsg+0x24/0x30 net/socket.c:2687\n   __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]\n   invoke_syscall+0x48/0x110 arch/arm64/kernel/syscall.c:49\n   el0_svc_common.constprop.0+0x40/0xe0 arch/arm64/kernel/syscall.c:132\n   do_el0_svc+0x1c/0x28 arch/arm64/kernel/syscall.c:151\n   el0_svc+0x34/0xec arch/arm64/kernel/entry-common.c:712\n   el0t_64_sync_handler+0x100/0x12c arch/arm64/kernel/entry-common.c:730\n   el0t_64_sync+0x19c/0x1a0 arch/arm64/kernel/entry.S:598\n  Code: f9404463 d63f0060 3108441f 54fffe81 (d4210000)\n  ---[ end trace 0000000000000000 ]---"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: tcp_bpf: se corrige el valor de retorno de tcp_bpf_sendmsg() Cuando copiamos mensajes en psock-\u0026gt;cork, el \u00faltimo mensaje que activa el vaciado dar\u00e1 como resultado el env\u00edo de un sk_msg m\u00e1s grande que el tama\u00f1o del mensaje actual. En este caso, en tcp_bpf_send_verdict(), \u0027copied\u0027 se vuelve negativo al menos en el siguiente caso: 468 case __SK_DROP: 469 default: 470 sk_msg_free_partial(sk, msg, tosend); 471 sk_msg_apply_bytes(psock, tosend); 472 *copied -= (tosend + delta); // \u0026lt;==== HERE 473 return -EACCES; Por lo tanto, podr\u00eda generar el siguiente ERROR con un valor adecuado de \u0027copied\u0027 (gracias a syzbot). No deber\u00edamos usar \u0027copied\u0027 negativo como valor de retorno aqu\u00ed. ------------[ corte aqu\u00ed ]------------ \u00a1ERROR del kernel en net/socket.c:733! Error interno: Oops - BUG: 00000000f2000800 [#1] PREEMPT M\u00f3dulos SMP vinculados en: CPU: 0 UID: 0 PID: 3265 Comm: syz-executor510 No contaminado 6.11.0-rc3-syzkaller-00060-gd07b43284ab3 #0 Nombre del hardware: linux,dummy-virt (DT) pstate: 61400009 (nZCv daif +PAN -UAO -TCO +DIT -SSBS BTYPE=--) pc : sock_sendmsg_nosec net/socket.c:733 [en l\u00ednea] pc : sock_sendmsg_nosec net/socket.c:728 [en l\u00ednea] pc : __sock_sendmsg+0x5c/0x60 net/socket.c:745 lr : sock_sendmsg_nosec net/socket.c:730 [en l\u00ednea] lr : __sock_sendmsg+0x54/0x60 net/socket.c:745 sp : ffff800088ea3b30 x29: ffff800088ea3b30 x28: fbf00000062bc900 x27: 0000000000000000 x26: ffff800088ea3bc0 x25: ffff800088ea3bc0 x24: 0000000000000000 x23: f9f0000048dc000 x22: 0000000000000000 x21: ffff800088ea3d90 x20: f9f00000048dc000 x19: ffff800088ea3d90 x18: 0000000000000001 x17: 0000000000000000 x16: 0000000000000000 x15: 000000002002ffaf x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000000000 x10: ffff8000815849c0 x9 : ffff8000815b49c0 x8 : 0000000000000000 x7 : 0000000000000003f x6 : 0000000000000000 x5 : 00000000000007e0 x4 : fff07ffffd239000 x3 : fbf00000062bc900 x2 : 000000000000000 x1 : 000000000000000 x0 : 00000000fffffdef Rastreo de llamadas: sock_sendmsg_nosec net/socket.c:733 [en l\u00ednea] __sock_sendmsg+0x5c/0x60 net/socket.c:745 ____sys_sendmsg+0x274/0x2ac net/socket.c:2597 ___sys_sendmsg+0xac/0x100 net/socket.c:2651 __sys_sendmsg+0x84/0xe0 net/socket.c:2680 __do_sys_sendmsg net/socket.c:2689 [en l\u00ednea] __se_sys_sendmsg net/socket.c:2687 [en l\u00ednea] __arm64_sys_sendmsg+0x24/0x30 net/socket.c:2687 __invoke_syscall arch/arm64/kernel/syscall.c:35 [en l\u00ednea] anybody_syscall+0x48/0x110 arch/arm64/kernel/syscall.c:49 el0_svc_common.constprop.0+0x40/0xe0 arch/arm64/kernel/syscall.c:132 do_el0_svc+0x1c/0x28 arch/arm64/kernel/syscall.c:151 el0_svc+0x34/0xec arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x100/0x12c arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x19c/0x1a0 arch/arm64/kernel/entry.S:598 C\u00f3digo: f9404463 d63f0060 3108441f 54fffe81 (d4210000) ---[ fin de seguimiento 0000000000000000 ]---"
    }
  ],
  "id": "CVE-2024-46783",
  "lastModified": "2025-11-03T23:16:01.077",
  "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"
      }
    ]
  },
  "published": "2024-09-18T08:15:05.630",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/126d72b726c4cf1119f3a7fe413a78d341c3fea9"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/3efe53eb221a38e207c1e3f81c51e4ca057d50c2"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/6f9fdf5806cced888c43512bccbdf7fefd50f510"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/78bb38d9c5a311c5f8bdef7c9557d7d81ca30e4a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/810a4e7d92dea4074cb04c25758320909d752193"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/c8219a27fa43a2cbf99f5176f6dddfe73e7a24ae"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/fe1910f9337bd46a9343967b547ccab26b4b2c6e"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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Sightings

Author Source Type Date

Nomenclature

  • 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.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • 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.