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
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6639 records in the last 180 days details
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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          "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 ***"
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    "dateUpdated": "2026-05-23T15:55:33.091Z",
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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 ***"
          },
          {
            "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 ***"
          }
        ],
        "id": "CVE-2024-54191",
        "lastModified": "2026-06-17T08:09:54.513",
        "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"
            },
            {
              "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": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "type": "Secondary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2024-54191",
                "options": [
                  {
                    "exploitation": "none"
                  },
                  {
                    "automatable": "no"
                  },
                  {
                    "technicalImpact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-10-01T19:55:33.815501Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2025-01-11T13:15:26.667",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/7a17308c17880d259105f6e591eb1bc77b9612f0"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/cbe640d6cae590b9a7d81ce86fe9a90e83eec1d5"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-667"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          },
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-667"
              }
            ],
            "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
            "type": "Secondary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-11-05T13:29:27+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": "199",
      "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"
    },
    "vulnrichment": {
      "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": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2025-10-01T19:55:33.815501Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "problemTypes": [
              {
                "descriptions": [
                  {
                    "cweId": "CWE-667",
                    "description": "CWE-667 Improper Locking",
                    "lang": "en",
                    "type": "CWE"
                  }
                ]
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2025-10-01T15:52:55.619Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "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"
                }
              ]
            },
            {
              "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
                    }
                  ],
                  "negate": false,
                  "operator": "OR"
                }
              ]
            }
          ],
          "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": "2025-05-04T13:00:48.976Z",
            "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": "2025-05-04T13:00:48.976Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



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