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CVE-2024-54191 (GCVE-0-2024-54191)

Vulnerability from cvelistv5 – Published: 2025-01-11 12:29 – Updated: 2026-05-23 15:55
VLAI
Title
Bluetooth: iso: Fix circular lock in iso_conn_big_sync
Summary
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: iso: Fix circular lock in iso_conn_big_sync This fixes the circular locking dependency warning below, by reworking iso_sock_recvmsg, to ensure that the socket lock is always released before calling a function that locks hdev. [ 561.670344] ====================================================== [ 561.670346] WARNING: possible circular locking dependency detected [ 561.670349] 6.12.0-rc6+ #26 Not tainted [ 561.670351] ------------------------------------------------------ [ 561.670353] iso-tester/3289 is trying to acquire lock: [ 561.670355] ffff88811f600078 (&hdev->lock){+.+.}-{3:3}, at: iso_conn_big_sync+0x73/0x260 [bluetooth] [ 561.670405] but task is already holding lock: [ 561.670407] ffff88815af58258 (sk_lock-AF_BLUETOOTH){+.+.}-{0:0}, at: iso_sock_recvmsg+0xbf/0x500 [bluetooth] [ 561.670450] which lock already depends on the new lock. [ 561.670452] the existing dependency chain (in reverse order) is: [ 561.670453] -> #2 (sk_lock-AF_BLUETOOTH){+.+.}-{0:0}: [ 561.670458] lock_acquire+0x7c/0xc0 [ 561.670463] lock_sock_nested+0x3b/0xf0 [ 561.670467] bt_accept_dequeue+0x1a5/0x4d0 [bluetooth] [ 561.670510] iso_sock_accept+0x271/0x830 [bluetooth] [ 561.670547] do_accept+0x3dd/0x610 [ 561.670550] __sys_accept4+0xd8/0x170 [ 561.670553] __x64_sys_accept+0x74/0xc0 [ 561.670556] x64_sys_call+0x17d6/0x25f0 [ 561.670559] do_syscall_64+0x87/0x150 [ 561.670563] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 561.670567] -> #1 (sk_lock-AF_BLUETOOTH-BTPROTO_ISO){+.+.}-{0:0}: [ 561.670571] lock_acquire+0x7c/0xc0 [ 561.670574] lock_sock_nested+0x3b/0xf0 [ 561.670577] iso_sock_listen+0x2de/0xf30 [bluetooth] [ 561.670617] __sys_listen_socket+0xef/0x130 [ 561.670620] __x64_sys_listen+0xe1/0x190 [ 561.670623] x64_sys_call+0x2517/0x25f0 [ 561.670626] do_syscall_64+0x87/0x150 [ 561.670629] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 561.670632] -> #0 (&hdev->lock){+.+.}-{3:3}: [ 561.670636] __lock_acquire+0x32ad/0x6ab0 [ 561.670639] lock_acquire.part.0+0x118/0x360 [ 561.670642] lock_acquire+0x7c/0xc0 [ 561.670644] __mutex_lock+0x18d/0x12f0 [ 561.670647] mutex_lock_nested+0x1b/0x30 [ 561.670651] iso_conn_big_sync+0x73/0x260 [bluetooth] [ 561.670687] iso_sock_recvmsg+0x3e9/0x500 [bluetooth] [ 561.670722] sock_recvmsg+0x1d5/0x240 [ 561.670725] sock_read_iter+0x27d/0x470 [ 561.670727] vfs_read+0x9a0/0xd30 [ 561.670731] ksys_read+0x1a8/0x250 [ 561.670733] __x64_sys_read+0x72/0xc0 [ 561.670736] x64_sys_call+0x1b12/0x25f0 [ 561.670738] do_syscall_64+0x87/0x150 [ 561.670741] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 561.670744] other info that might help us debug this: [ 561.670745] Chain exists of: &hdev->lock --> sk_lock-AF_BLUETOOTH-BTPROTO_ISO --> sk_lock-AF_BLUETOOTH [ 561.670751] Possible unsafe locking scenario: [ 561.670753] CPU0 CPU1 [ 561.670754] ---- ---- [ 561.670756] lock(sk_lock-AF_BLUETOOTH); [ 561.670758] lock(sk_lock AF_BLUETOOTH-BTPROTO_ISO); [ 561.670761] lock(sk_lock-AF_BLUETOOTH); [ 561.670764] lock(&hdev->lock); [ 561.670767] *** DEADLOCK ***
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-01 19:55 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 1360e5b6ce63d63d23223a659ca2bbafa30a53aa , < cbe640d6cae590b9a7d81ce86fe9a90e83eec1d5 (git)
Affected: 07a9342b94a91b306ed1cf6aa8254aea210764c9 , < 7a17308c17880d259105f6e591eb1bc77b9612f0 (git)
Affected: bfec1e55314896bf4a4cfdb3a9ad4872be9f06ed (git)
Affected: 6.11.11 , < 6.12 (semver)
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Linux Linux Affected: 6.12.2 , < 6.12.6 (semver)
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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "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"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2024-54191",
                "options": [
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                    "Exploitation": "none"
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                "role": "CISA Coordinator",
                "timestamp": "2025-10-01T19:55:33.815501Z",
                "version": "2.0.3"
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            "descriptions": [
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                "description": "CWE-667 Improper Locking",
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                "type": "CWE"
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        "providerMetadata": {
          "dateUpdated": "2025-10-01T19:57:21.849Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
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        "title": "CISA ADP Vulnrichment"
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    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/bluetooth/iso.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "cbe640d6cae590b9a7d81ce86fe9a90e83eec1d5",
              "status": "affected",
              "version": "1360e5b6ce63d63d23223a659ca2bbafa30a53aa",
              "versionType": "git"
            },
            {
              "lessThan": "7a17308c17880d259105f6e591eb1bc77b9612f0",
              "status": "affected",
              "version": "07a9342b94a91b306ed1cf6aa8254aea210764c9",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "bfec1e55314896bf4a4cfdb3a9ad4872be9f06ed",
              "versionType": "git"
            },
            {
              "lessThan": "6.12",
              "status": "affected",
              "version": "6.11.11",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/bluetooth/iso.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "6.12.6",
              "status": "affected",
              "version": "6.12.2",
              "versionType": "semver"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.6",
                  "versionStartIncluding": "6.12.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "6.11.11",
                  "vulnerable": true
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              "negate": false,
              "operator": "OR"
            }
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: iso: Fix circular lock in iso_conn_big_sync\n\nThis fixes the circular locking dependency warning below, by reworking\niso_sock_recvmsg, to ensure that the socket lock is always released\nbefore calling a function that locks hdev.\n\n[  561.670344] ======================================================\n[  561.670346] WARNING: possible circular locking dependency detected\n[  561.670349] 6.12.0-rc6+ #26 Not tainted\n[  561.670351] ------------------------------------------------------\n[  561.670353] iso-tester/3289 is trying to acquire lock:\n[  561.670355] ffff88811f600078 (\u0026hdev-\u003elock){+.+.}-{3:3},\n               at: iso_conn_big_sync+0x73/0x260 [bluetooth]\n[  561.670405]\n               but task is already holding lock:\n[  561.670407] ffff88815af58258 (sk_lock-AF_BLUETOOTH){+.+.}-{0:0},\n               at: iso_sock_recvmsg+0xbf/0x500 [bluetooth]\n[  561.670450]\n               which lock already depends on the new lock.\n\n[  561.670452]\n               the existing dependency chain (in reverse order) is:\n[  561.670453]\n               -\u003e #2 (sk_lock-AF_BLUETOOTH){+.+.}-{0:0}:\n[  561.670458]        lock_acquire+0x7c/0xc0\n[  561.670463]        lock_sock_nested+0x3b/0xf0\n[  561.670467]        bt_accept_dequeue+0x1a5/0x4d0 [bluetooth]\n[  561.670510]        iso_sock_accept+0x271/0x830 [bluetooth]\n[  561.670547]        do_accept+0x3dd/0x610\n[  561.670550]        __sys_accept4+0xd8/0x170\n[  561.670553]        __x64_sys_accept+0x74/0xc0\n[  561.670556]        x64_sys_call+0x17d6/0x25f0\n[  561.670559]        do_syscall_64+0x87/0x150\n[  561.670563]        entry_SYSCALL_64_after_hwframe+0x76/0x7e\n[  561.670567]\n               -\u003e #1 (sk_lock-AF_BLUETOOTH-BTPROTO_ISO){+.+.}-{0:0}:\n[  561.670571]        lock_acquire+0x7c/0xc0\n[  561.670574]        lock_sock_nested+0x3b/0xf0\n[  561.670577]        iso_sock_listen+0x2de/0xf30 [bluetooth]\n[  561.670617]        __sys_listen_socket+0xef/0x130\n[  561.670620]        __x64_sys_listen+0xe1/0x190\n[  561.670623]        x64_sys_call+0x2517/0x25f0\n[  561.670626]        do_syscall_64+0x87/0x150\n[  561.670629]        entry_SYSCALL_64_after_hwframe+0x76/0x7e\n[  561.670632]\n               -\u003e #0 (\u0026hdev-\u003elock){+.+.}-{3:3}:\n[  561.670636]        __lock_acquire+0x32ad/0x6ab0\n[  561.670639]        lock_acquire.part.0+0x118/0x360\n[  561.670642]        lock_acquire+0x7c/0xc0\n[  561.670644]        __mutex_lock+0x18d/0x12f0\n[  561.670647]        mutex_lock_nested+0x1b/0x30\n[  561.670651]        iso_conn_big_sync+0x73/0x260 [bluetooth]\n[  561.670687]        iso_sock_recvmsg+0x3e9/0x500 [bluetooth]\n[  561.670722]        sock_recvmsg+0x1d5/0x240\n[  561.670725]        sock_read_iter+0x27d/0x470\n[  561.670727]        vfs_read+0x9a0/0xd30\n[  561.670731]        ksys_read+0x1a8/0x250\n[  561.670733]        __x64_sys_read+0x72/0xc0\n[  561.670736]        x64_sys_call+0x1b12/0x25f0\n[  561.670738]        do_syscall_64+0x87/0x150\n[  561.670741]        entry_SYSCALL_64_after_hwframe+0x76/0x7e\n[  561.670744]\n               other info that might help us debug this:\n\n[  561.670745] Chain exists of:\n\u0026hdev-\u003elock --\u003e sk_lock-AF_BLUETOOTH-BTPROTO_ISO --\u003e sk_lock-AF_BLUETOOTH\n\n[  561.670751]  Possible unsafe locking scenario:\n\n[  561.670753]        CPU0                    CPU1\n[  561.670754]        ----                    ----\n[  561.670756]   lock(sk_lock-AF_BLUETOOTH);\n[  561.670758]                                lock(sk_lock\n                                              AF_BLUETOOTH-BTPROTO_ISO);\n[  561.670761]                                lock(sk_lock-AF_BLUETOOTH);\n[  561.670764]   lock(\u0026hdev-\u003elock);\n[  561.670767]\n                *** DEADLOCK ***"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-23T15:55:33.091Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/cbe640d6cae590b9a7d81ce86fe9a90e83eec1d5"
        },
        {
          "url": "https://git.kernel.org/stable/c/7a17308c17880d259105f6e591eb1bc77b9612f0"
        }
      ],
      "title": "Bluetooth: iso: Fix circular lock in iso_conn_big_sync",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-54191",
    "datePublished": "2025-01-11T12:29:52.753Z",
    "dateReserved": "2025-01-09T09:49:29.716Z",
    "dateUpdated": "2026-05-23T15:55:33.091Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2024-54191",
      "date": "2026-09-17",
      "epss": "0.00137",
      "percentile": "0.03512"
    },
    "fkie_nvd": {
      "descriptions": "[{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nBluetooth: iso: Fix circular lock in iso_conn_big_sync\\n\\nThis fixes the circular locking dependency warning below, by reworking\\niso_sock_recvmsg, to ensure that the socket lock is always released\\nbefore calling a function that locks hdev.\\n\\n[  561.670344] ======================================================\\n[  561.670346] WARNING: possible circular locking dependency detected\\n[  561.670349] 6.12.0-rc6+ #26 Not tainted\\n[  561.670351] ------------------------------------------------------\\n[  561.670353] iso-tester/3289 is trying to acquire lock:\\n[  561.670355] ffff88811f600078 (\u0026hdev-\u003elock){+.+.}-{3:3},\\n               at: iso_conn_big_sync+0x73/0x260 [bluetooth]\\n[  561.670405]\\n               but task is already holding lock:\\n[  561.670407] ffff88815af58258 (sk_lock-AF_BLUETOOTH){+.+.}-{0:0},\\n               at: iso_sock_recvmsg+0xbf/0x500 [bluetooth]\\n[  561.670450]\\n               which lock already depends on the new lock.\\n\\n[  561.670452]\\n               the existing dependency chain (in reverse order) is:\\n[  561.670453]\\n               -\u003e #2 (sk_lock-AF_BLUETOOTH){+.+.}-{0:0}:\\n[  561.670458]        lock_acquire+0x7c/0xc0\\n[  561.670463]        lock_sock_nested+0x3b/0xf0\\n[  561.670467]        bt_accept_dequeue+0x1a5/0x4d0 [bluetooth]\\n[  561.670510]        iso_sock_accept+0x271/0x830 [bluetooth]\\n[  561.670547]        do_accept+0x3dd/0x610\\n[  561.670550]        __sys_accept4+0xd8/0x170\\n[  561.670553]        __x64_sys_accept+0x74/0xc0\\n[  561.670556]        x64_sys_call+0x17d6/0x25f0\\n[  561.670559]        do_syscall_64+0x87/0x150\\n[  561.670563]        entry_SYSCALL_64_after_hwframe+0x76/0x7e\\n[  561.670567]\\n               -\u003e #1 (sk_lock-AF_BLUETOOTH-BTPROTO_ISO){+.+.}-{0:0}:\\n[  561.670571]        lock_acquire+0x7c/0xc0\\n[  561.670574]        lock_sock_nested+0x3b/0xf0\\n[  561.670577]        iso_sock_listen+0x2de/0xf30 [bluetooth]\\n[  561.670617]        __sys_listen_socket+0xef/0x130\\n[  561.670620]        __x64_sys_listen+0xe1/0x190\\n[  561.670623]        x64_sys_call+0x2517/0x25f0\\n[  561.670626]        do_syscall_64+0x87/0x150\\n[  561.670629]        entry_SYSCALL_64_after_hwframe+0x76/0x7e\\n[  561.670632]\\n               -\u003e #0 (\u0026hdev-\u003elock){+.+.}-{3:3}:\\n[  561.670636]        __lock_acquire+0x32ad/0x6ab0\\n[  561.670639]        lock_acquire.part.0+0x118/0x360\\n[  561.670642]        lock_acquire+0x7c/0xc0\\n[  561.670644]        __mutex_lock+0x18d/0x12f0\\n[  561.670647]        mutex_lock_nested+0x1b/0x30\\n[  561.670651]        iso_conn_big_sync+0x73/0x260 [bluetooth]\\n[  561.670687]        iso_sock_recvmsg+0x3e9/0x500 [bluetooth]\\n[  561.670722]        sock_recvmsg+0x1d5/0x240\\n[  561.670725]        sock_read_iter+0x27d/0x470\\n[  561.670727]        vfs_read+0x9a0/0xd30\\n[  561.670731]        ksys_read+0x1a8/0x250\\n[  561.670733]        __x64_sys_read+0x72/0xc0\\n[  561.670736]        x64_sys_call+0x1b12/0x25f0\\n[  561.670738]        do_syscall_64+0x87/0x150\\n[  561.670741]        entry_SYSCALL_64_after_hwframe+0x76/0x7e\\n[  561.670744]\\n               other info that might help us debug this:\\n\\n[  561.670745] Chain exists of:\\n\u0026hdev-\u003elock --\u003e sk_lock-AF_BLUETOOTH-BTPROTO_ISO --\u003e sk_lock-AF_BLUETOOTH\\n\\n[  561.670751]  Possible unsafe locking scenario:\\n\\n[  561.670753]        CPU0                    CPU1\\n[  561.670754]        ----                    ----\\n[  561.670756]   lock(sk_lock-AF_BLUETOOTH);\\n[  561.670758]                                lock(sk_lock\\n                                              AF_BLUETOOTH-BTPROTO_ISO);\\n[  561.670761]                                lock(sk_lock-AF_BLUETOOTH);\\n[  561.670764]   lock(\u0026hdev-\u003elock);\\n[  561.670767]\\n                *** DEADLOCK ***\"}]",
      "id": "CVE-2024-54191",
      "lastModified": "2025-01-11T13:15:26.667",
      "published": "2025-01-11T13:15:26.667",
      "references": "[{\"url\": \"https://git.kernel.org/stable/c/7a17308c17880d259105f6e591eb1bc77b9612f0\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/cbe640d6cae590b9a7d81ce86fe9a90e83eec1d5\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]",
      "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "vulnStatus": "Received"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-54191\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-01-11T13:15:26.667\",\"lastModified\":\"2026-06-17T08:09:54.513\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nBluetooth: iso: Fix circular lock in iso_conn_big_sync\\n\\nThis fixes the circular locking dependency warning below, by reworking\\niso_sock_recvmsg, to ensure that the socket lock is always released\\nbefore calling a function that locks hdev.\\n\\n[  561.670344] ======================================================\\n[  561.670346] WARNING: possible circular locking dependency detected\\n[  561.670349] 6.12.0-rc6+ #26 Not tainted\\n[  561.670351] ------------------------------------------------------\\n[  561.670353] iso-tester/3289 is trying to acquire lock:\\n[  561.670355] ffff88811f600078 (\u0026hdev-\u003elock){+.+.}-{3:3},\\n               at: iso_conn_big_sync+0x73/0x260 [bluetooth]\\n[  561.670405]\\n               but task is already holding lock:\\n[  561.670407] ffff88815af58258 (sk_lock-AF_BLUETOOTH){+.+.}-{0:0},\\n               at: iso_sock_recvmsg+0xbf/0x500 [bluetooth]\\n[  561.670450]\\n               which lock already depends on the new lock.\\n\\n[  561.670452]\\n               the existing dependency chain (in reverse order) is:\\n[  561.670453]\\n               -\u003e #2 (sk_lock-AF_BLUETOOTH){+.+.}-{0:0}:\\n[  561.670458]        lock_acquire+0x7c/0xc0\\n[  561.670463]        lock_sock_nested+0x3b/0xf0\\n[  561.670467]        bt_accept_dequeue+0x1a5/0x4d0 [bluetooth]\\n[  561.670510]        iso_sock_accept+0x271/0x830 [bluetooth]\\n[  561.670547]        do_accept+0x3dd/0x610\\n[  561.670550]        __sys_accept4+0xd8/0x170\\n[  561.670553]        __x64_sys_accept+0x74/0xc0\\n[  561.670556]        x64_sys_call+0x17d6/0x25f0\\n[  561.670559]        do_syscall_64+0x87/0x150\\n[  561.670563]        entry_SYSCALL_64_after_hwframe+0x76/0x7e\\n[  561.670567]\\n               -\u003e #1 (sk_lock-AF_BLUETOOTH-BTPROTO_ISO){+.+.}-{0:0}:\\n[  561.670571]        lock_acquire+0x7c/0xc0\\n[  561.670574]        lock_sock_nested+0x3b/0xf0\\n[  561.670577]        iso_sock_listen+0x2de/0xf30 [bluetooth]\\n[  561.670617]        __sys_listen_socket+0xef/0x130\\n[  561.670620]        __x64_sys_listen+0xe1/0x190\\n[  561.670623]        x64_sys_call+0x2517/0x25f0\\n[  561.670626]        do_syscall_64+0x87/0x150\\n[  561.670629]        entry_SYSCALL_64_after_hwframe+0x76/0x7e\\n[  561.670632]\\n               -\u003e #0 (\u0026hdev-\u003elock){+.+.}-{3:3}:\\n[  561.670636]        __lock_acquire+0x32ad/0x6ab0\\n[  561.670639]        lock_acquire.part.0+0x118/0x360\\n[  561.670642]        lock_acquire+0x7c/0xc0\\n[  561.670644]        __mutex_lock+0x18d/0x12f0\\n[  561.670647]        mutex_lock_nested+0x1b/0x30\\n[  561.670651]        iso_conn_big_sync+0x73/0x260 [bluetooth]\\n[  561.670687]        iso_sock_recvmsg+0x3e9/0x500 [bluetooth]\\n[  561.670722]        sock_recvmsg+0x1d5/0x240\\n[  561.670725]        sock_read_iter+0x27d/0x470\\n[  561.670727]        vfs_read+0x9a0/0xd30\\n[  561.670731]        ksys_read+0x1a8/0x250\\n[  561.670733]        __x64_sys_read+0x72/0xc0\\n[  561.670736]        x64_sys_call+0x1b12/0x25f0\\n[  561.670738]        do_syscall_64+0x87/0x150\\n[  561.670741]        entry_SYSCALL_64_after_hwframe+0x76/0x7e\\n[  561.670744]\\n               other info that might help us debug this:\\n\\n[  561.670745] Chain exists of:\\n\u0026hdev-\u003elock --\u003e sk_lock-AF_BLUETOOTH-BTPROTO_ISO --\u003e sk_lock-AF_BLUETOOTH\\n\\n[  561.670751]  Possible unsafe locking scenario:\\n\\n[  561.670753]        CPU0                    CPU1\\n[  561.670754]        ----                    ----\\n[  561.670756]   lock(sk_lock-AF_BLUETOOTH);\\n[  561.670758]                                lock(sk_lock\\n                                              AF_BLUETOOTH-BTPROTO_ISO);\\n[  561.670761]                                lock(sk_lock-AF_BLUETOOTH);\\n[  561.670764]   lock(\u0026hdev-\u003elock);\\n[  561.670767]\\n                *** DEADLOCK ***\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: Bluetooth: iso: Corregir bloqueo circular en iso_conn_big_sync Esto corrige la advertencia de dependencia de bloqueo circular a continuaci\u00f3n, al reelaborar iso_sock_recvmsg, para garantizar que el bloqueo del socket siempre se libere antes de llamar a una funci\u00f3n que bloquea hdev. [ 561.670344] ========================================================= [ 561.670346] ADVERTENCIA: posible dependencia de bloqueo circular detectada [ 561.670349] 6.12.0-rc6+ #26 No contaminado [ 561.670351] ------------------------------------------------------ [ 561.670353] iso-tester/3289 est\u00e1 intentando adquirir bloqueo: [ 561.670355] ffff88811f600078 (\u0026amp;hdev-\u0026gt;lock){+.+.}-{3:3}, en: iso_conn_big_sync+0x73/0x260 [bluetooth] [ 561.670405] pero la tarea ya tiene el bloqueo: [ 561.670407] ffff88815af58258 (sk_lock-AF_BLUETOOTH){+.+.}-{0:0}, en: iso_sock_recvmsg+0xbf/0x500 [bluetooth] [ 561.670450] cuyo bloqueo ya depende del nuevo bloqueo. [ 561.670452] la cadena de dependencia existente (en orden inverso) es: [ 561.670453] -\u0026gt; #2 (sk_lock-AF_BLUETOOTH){+.+.}-{0:0}: [ 561.670458] lock_acquire+0x7c/0xc0 [ 561.670463] lock_sock_nested+0x3b/0xf0 [ 561.670467] bt_accept_dequeue+0x1a5/0x4d0 [bluetooth] [ 561.670510] iso_sock_accept+0x271/0x830 [bluetooth] [ 561.670547] do_accept+0x3dd/0x610 [ 561.670550] __sys_accept4+0xd8/0x170 [ 561.670553] __x64_sys_accept+0x74/0xc0 [ 561.670556] x64_sys_call+0x17d6/0x25f0 [ 561.670559] hacer_syscall_64+0x87/0x150 [ 561.670563] entrada_SYSCALL_64_after_hwframe+0x76/0x7e [ 561.670567] -\u0026gt; #1 (sk_lock-AF_BLUETOOTH-BTPROTO_ISO){+.+.}-{0:0}: [ 561.670571] bloqueo_adquirir+0x7c/0xc0 [ 561.670574] lock_sock_nested+0x3b/0xf0 [ 561.670577] iso_sock_listen+0x2de/0xf30 [bluetooth] [ 561.670617] __sys_listen_socket+0xef/0x130 [ 561.670620] __x64_sys_listen+0xe1/0x190 [ 561.670623] x64_sys_call+0x2517/0x25f0 [ 561.670626] hacer_syscall_64+0x87/0x150 [ 561.670629] entrada_SYSCALL_64_despu\u00e9s_de_hwframe+0x76/0x7e [ 561.670632] -\u0026gt; #0 (\u0026amp;hdev-\u0026gt;lock){+.+.}-{3:3}: [ 561.670636] __lock_acquire+0x32ad/0x6ab0 [ 561.670639] lock_acquire.part.0+0x118/0x360 [ 561.670642] lock_acquire+0x7c/0xc0 [ 561.670644] __mutex_lock+0x18d/0x12f0 [ 561.670647] mutex_lock_nested+0x1b/0x30 [ 561.670651] iso_conn_big_sync+0x73/0x260 [bluetooth] [ 561.670687] iso_sock_recvmsg+0x3e9/0x500 [bluetooth] [561.670722] sock_recvmsg+0x1d5/0x240 [561.670725] sock_read_iter+0x27d/0x470 [561.670727] vfs_read+0x9a0/0xd30 [561.670731] ksys_read+0x1a8/0x250 [561.670733] __x64_sys_read+0x72/0xc0 [561.670736] x64_sys_call+0x1b12/0x25f0 [561.670738] do_syscall_64+0x87/0x150 [ 561.670741] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 561.670744] otra informaci\u00f3n que podr\u00eda ayudarnos a depurar esto: [ 561.670745] La cadena existe de: \u0026amp;hdev-\u0026gt;lock --\u0026gt; sk_lock-AF_BLUETOOTH-BTPROTO_ISO --\u0026gt; sk_lock-AF_BLUETOOTH [ 561.670751] Posible escenario de bloqueo inseguro: [ 561.670753] CPU0 CPU1 [ 561.670754] ---- ---- [ 561.670756] lock(sk_lock-AF_BLUETOOTH); [ 561.670758] bloqueo(sk_lock AF_BLUETOOTH-BTPROTO_ISO); [ 561.670761] bloqueo(sk_lock-AF_BLUETOOTH); [ 561.670764] bloqueo(\u0026amp;hdev-\u0026gt;lock); [ 561.670767] *** BLOQUEO INTERMEDIO ***\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"net/bluetooth/iso.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"1360e5b6ce63d63d23223a659ca2bbafa30a53aa\",\"lessThan\":\"cbe640d6cae590b9a7d81ce86fe9a90e83eec1d5\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"07a9342b94a91b306ed1cf6aa8254aea210764c9\",\"lessThan\":\"7a17308c17880d259105f6e591eb1bc77b9612f0\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"bfec1e55314896bf4a4cfdb3a9ad4872be9f06ed\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6.11.11\",\"lessThan\":\"6.12\",\"versionType\":\"semver\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"net/bluetooth/iso.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.12.2\",\"lessThan\":\"6.12.6\",\"versionType\":\"semver\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2025-10-01T19:55:33.815501Z\",\"id\":\"CVE-2024-54191\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-667\"}]},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-667\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.11.11\",\"versionEndExcluding\":\"6.12\",\"matchCriteriaId\":\"4CBF5F6E-D446-4CAE-AAA4-413442319824\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.12.2\",\"versionEndExcluding\":\"6.12.6\",\"matchCriteriaId\":\"56F9CCF9-9EA2-4DE9-BBC1-74C3D2046E55\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.13:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"62567B3C-6CEE-46D0-BC2E-B3717FBF7D13\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.13:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"5A073481-106D-4B15-B4C7-FB0213B8E1D4\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/7a17308c17880d259105f6e591eb1bc77b9612f0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/cbe640d6cae590b9a7d81ce86fe9a90e83eec1d5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2025-11-21T13:55:59+00:00",
      "cve": "CVE-2024-54191",
      "id": "CVE-2024-54191",
      "initial_release_date": "2024-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "198",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: Bluetooth: iso: Fix circular lock in iso_conn_big_sync",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-54191.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-29T01:39:24Z",
      "cve": "CVE-2024-54191",
      "id": "CVE-2024-54191",
      "initial_release_date": "2025-01-12T00:15:32Z",
      "product_status:known_not_affected": "463",
      "product_status:recommended": "78",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2024-54191",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2024-54191.json",
      "version": "24"
    },
    "vulnrichment": {
      "containers": "{\"cna\": {\"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T13:00:48.976Z\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nBluetooth: iso: Fix circular lock in iso_conn_big_sync\\n\\nThis fixes the circular locking dependency warning below, by reworking\\niso_sock_recvmsg, to ensure that the socket lock is always released\\nbefore calling a function that locks hdev.\\n\\n[  561.670344] ======================================================\\n[  561.670346] WARNING: possible circular locking dependency detected\\n[  561.670349] 6.12.0-rc6+ #26 Not tainted\\n[  561.670351] ------------------------------------------------------\\n[  561.670353] iso-tester/3289 is trying to acquire lock:\\n[  561.670355] ffff88811f600078 (\u0026hdev-\u003elock){+.+.}-{3:3},\\n               at: iso_conn_big_sync+0x73/0x260 [bluetooth]\\n[  561.670405]\\n               but task is already holding lock:\\n[  561.670407] ffff88815af58258 (sk_lock-AF_BLUETOOTH){+.+.}-{0:0},\\n               at: iso_sock_recvmsg+0xbf/0x500 [bluetooth]\\n[  561.670450]\\n               which lock already depends on the new lock.\\n\\n[  561.670452]\\n               the existing dependency chain (in reverse order) is:\\n[  561.670453]\\n               -\u003e #2 (sk_lock-AF_BLUETOOTH){+.+.}-{0:0}:\\n[  561.670458]        lock_acquire+0x7c/0xc0\\n[  561.670463]        lock_sock_nested+0x3b/0xf0\\n[  561.670467]        bt_accept_dequeue+0x1a5/0x4d0 [bluetooth]\\n[  561.670510]        iso_sock_accept+0x271/0x830 [bluetooth]\\n[  561.670547]        do_accept+0x3dd/0x610\\n[  561.670550]        __sys_accept4+0xd8/0x170\\n[  561.670553]        __x64_sys_accept+0x74/0xc0\\n[  561.670556]        x64_sys_call+0x17d6/0x25f0\\n[  561.670559]        do_syscall_64+0x87/0x150\\n[  561.670563]        entry_SYSCALL_64_after_hwframe+0x76/0x7e\\n[  561.670567]\\n               -\u003e #1 (sk_lock-AF_BLUETOOTH-BTPROTO_ISO){+.+.}-{0:0}:\\n[  561.670571]        lock_acquire+0x7c/0xc0\\n[  561.670574]        lock_sock_nested+0x3b/0xf0\\n[  561.670577]        iso_sock_listen+0x2de/0xf30 [bluetooth]\\n[  561.670617]        __sys_listen_socket+0xef/0x130\\n[  561.670620]        __x64_sys_listen+0xe1/0x190\\n[  561.670623]        x64_sys_call+0x2517/0x25f0\\n[  561.670626]        do_syscall_64+0x87/0x150\\n[  561.670629]        entry_SYSCALL_64_after_hwframe+0x76/0x7e\\n[  561.670632]\\n               -\u003e #0 (\u0026hdev-\u003elock){+.+.}-{3:3}:\\n[  561.670636]        __lock_acquire+0x32ad/0x6ab0\\n[  561.670639]        lock_acquire.part.0+0x118/0x360\\n[  561.670642]        lock_acquire+0x7c/0xc0\\n[  561.670644]        __mutex_lock+0x18d/0x12f0\\n[  561.670647]        mutex_lock_nested+0x1b/0x30\\n[  561.670651]        iso_conn_big_sync+0x73/0x260 [bluetooth]\\n[  561.670687]        iso_sock_recvmsg+0x3e9/0x500 [bluetooth]\\n[  561.670722]        sock_recvmsg+0x1d5/0x240\\n[  561.670725]        sock_read_iter+0x27d/0x470\\n[  561.670727]        vfs_read+0x9a0/0xd30\\n[  561.670731]        ksys_read+0x1a8/0x250\\n[  561.670733]        __x64_sys_read+0x72/0xc0\\n[  561.670736]        x64_sys_call+0x1b12/0x25f0\\n[  561.670738]        do_syscall_64+0x87/0x150\\n[  561.670741]        entry_SYSCALL_64_after_hwframe+0x76/0x7e\\n[  561.670744]\\n               other info that might help us debug this:\\n\\n[  561.670745] Chain exists of:\\n\u0026hdev-\u003elock --\u003e sk_lock-AF_BLUETOOTH-BTPROTO_ISO --\u003e sk_lock-AF_BLUETOOTH\\n\\n[  561.670751]  Possible unsafe locking scenario:\\n\\n[  561.670753]        CPU0                    CPU1\\n[  561.670754]        ----                    ----\\n[  561.670756]   lock(sk_lock-AF_BLUETOOTH);\\n[  561.670758]                                lock(sk_lock\\n                                              AF_BLUETOOTH-BTPROTO_ISO);\\n[  561.670761]                                lock(sk_lock-AF_BLUETOOTH);\\n[  561.670764]   lock(\u0026hdev-\u003elock);\\n[  561.670767]\\n                *** DEADLOCK ***\"}], \"affected\": [{\"product\": \"Linux\", \"vendor\": \"Linux\", \"defaultStatus\": \"unaffected\", \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"programFiles\": [\"net/bluetooth/iso.c\"], \"versions\": [{\"version\": \"1360e5b6ce63d63d23223a659ca2bbafa30a53aa\", \"lessThan\": \"cbe640d6cae590b9a7d81ce86fe9a90e83eec1d5\", \"status\": \"affected\", \"versionType\": \"git\"}, {\"version\": \"07a9342b94a91b306ed1cf6aa8254aea210764c9\", \"lessThan\": \"7a17308c17880d259105f6e591eb1bc77b9612f0\", \"status\": \"affected\", \"versionType\": \"git\"}, {\"version\": \"bfec1e55314896bf4a4cfdb3a9ad4872be9f06ed\", \"status\": \"affected\", \"versionType\": \"git\"}]}, {\"product\": \"Linux\", \"vendor\": \"Linux\", \"defaultStatus\": \"unaffected\", \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"programFiles\": [\"net/bluetooth/iso.c\"], \"versions\": [{\"version\": \"6.12.2\", \"lessThan\": \"6.12.6\", \"status\": \"affected\", \"versionType\": \"semver\"}]}], \"cpeApplicability\": [{\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"6.12.2\", \"versionEndExcluding\": \"6.12.6\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"6.11.11\"}]}]}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/cbe640d6cae590b9a7d81ce86fe9a90e83eec1d5\"}, {\"url\": \"https://git.kernel.org/stable/c/7a17308c17880d259105f6e591eb1bc77b9612f0\"}], \"title\": \"Bluetooth: iso: Fix circular lock in iso_conn_big_sync\", \"x_generator\": {\"engine\": \"bippy-1.2.0\"}}, \"adp\": [{\"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-2024-54191\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-10-01T19:55:33.815501Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-667\", \"description\": \"CWE-667 Improper Locking\"}]}], \"providerMetadata\": {\"shortName\": \"CISA-ADP\", \"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"dateUpdated\": \"2025-10-01T15:52:55.619Z\"}, \"title\": \"CISA ADP Vulnrichment\"}]}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-54191\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"state\": \"PUBLISHED\", \"assignerShortName\": \"Linux\", \"dateReserved\": \"2025-01-09T09:49:29.716Z\", \"datePublished\": \"2025-01-11T12:29:52.753Z\", \"dateUpdated\": \"2025-05-04T13:00:48.976Z\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

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.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.