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CVE-2024-50044 (GCVE-0-2024-50044)

Vulnerability from cvelistv5 – Published: 2024-10-21 19:39 – Updated: 2026-05-12 12:00
VLAI
Title
Bluetooth: RFCOMM: FIX possible deadlock in rfcomm_sk_state_change
Summary
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: RFCOMM: FIX possible deadlock in rfcomm_sk_state_change rfcomm_sk_state_change attempts to use sock_lock so it must never be called with it locked but rfcomm_sock_ioctl always attempt to lock it causing the following trace: ====================================================== WARNING: possible circular locking dependency detected 6.8.0-syzkaller-08951-gfe46a7dd189e #0 Not tainted ------------------------------------------------------ syz-executor386/5093 is trying to acquire lock: ffff88807c396258 (sk_lock-AF_BLUETOOTH-BTPROTO_RFCOMM){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1671 [inline] ffff88807c396258 (sk_lock-AF_BLUETOOTH-BTPROTO_RFCOMM){+.+.}-{0:0}, at: rfcomm_sk_state_change+0x5b/0x310 net/bluetooth/rfcomm/sock.c:73 but task is already holding lock: ffff88807badfd28 (&d->lock){+.+.}-{3:3}, at: __rfcomm_dlc_close+0x226/0x6a0 net/bluetooth/rfcomm/core.c:491
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-10-22 13:24 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 3241ad820dbb172021e0268b5611031991431626 , < b77b3fb12fd483cae7c28648903b1d8a6b275f01 (git)
Affected: 3241ad820dbb172021e0268b5611031991431626 , < 869c6ee62ab8f01bf2419e45326642be5c9b670a (git)
Affected: 3241ad820dbb172021e0268b5611031991431626 , < ef44274dae9b0a90d1a97ce8b242a3b8243a7745 (git)
Affected: 3241ad820dbb172021e0268b5611031991431626 , < 496b2ab0fd10f205e08909a125485fdc98843dbe (git)
Affected: 3241ad820dbb172021e0268b5611031991431626 , < ced98072d3511b232ae1d3347945f35f30c0e303 (git)
Affected: 3241ad820dbb172021e0268b5611031991431626 , < 38b2d5a57d125e1c17661b8308c0240c4a43b534 (git)
Affected: 3241ad820dbb172021e0268b5611031991431626 , < 4cb9807c9b53bf1e5560420d26f319f528b50268 (git)
Affected: 3241ad820dbb172021e0268b5611031991431626 , < 08d1914293dae38350b8088980e59fbc699a72fe (git)
guessed Create a notification for this product.
Linux Linux Affected: 2.6.27
Unaffected: 0 , < 2.6.27 (semver)
Unaffected: 4.19.323 , ≤ 4.19.* (semver)
Unaffected: 5.4.285 , ≤ 5.4.* (semver)
Unaffected: 5.10.227 , ≤ 5.10.* (semver)
Unaffected: 5.15.168 , ≤ 5.15.* (semver)
Unaffected: 6.1.113 , ≤ 6.1.* (semver)
Unaffected: 6.6.57 , ≤ 6.6.* (semver)
Unaffected: 6.11.4 , ≤ 6.11.* (semver)
Unaffected: 6.12 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Siemens RUGGEDCOM RST2428P Unaffected: 0 , < * (custom)
guessed Create a notification for this product.
Siemens SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family Unaffected: 0 , < * (custom)
guessed Create a notification for this product.
Siemens SCALANCE XCM-/XRM-/XCH-/XRH-300 family Unaffected: 0 , < * (custom)
guessed Create a notification for this product.
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem Affected: 0 , < * (custom)
guessed Create a notification for this product.
Show details on NVD website
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      "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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    "microsoft_vex": {
      "current_release_date": "2026-02-18T01:19:47.000Z",
      "cve": "CVE-2024-50044",
      "id": "msrc_CVE-2024-50044",
      "initial_release_date": "2024-10-01T07:00:00.000Z",
      "product_status:fixed": "5",
      "product_status:known_affected": "5",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "Bluetooth: RFCOMM: FIX possible deadlock in rfcomm_sk_state_change",
      "url": "https://msrc.microsoft.com/csaf/vex/2024/msrc_cve-2024-50044.json",
      "version": "3"
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[inline]\\nffff88807c396258 (sk_lock-AF_BLUETOOTH-BTPROTO_RFCOMM){+.+.}-{0:0}, at: rfcomm_sk_state_change+0x5b/0x310 net/bluetooth/rfcomm/sock.c:73\\n\\nbut task is already holding lock:\\nffff88807badfd28 (\u0026d-\u003elock){+.+.}-{3:3}, at: __rfcomm_dlc_close+0x226/0x6a0 net/bluetooth/rfcomm/core.c:491\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: Bluetooth: RFCOMM: CORREGIR posible bloqueo en rfcomm_sk_state_change rfcomm_sk_state_change intenta usar sock_lock, por lo que nunca se debe llamar con \u00e9l bloqueado, pero rfcomm_sock_ioctl siempre intenta bloquearlo, lo que provoca el siguiente rastro: ======================================================= ADVERTENCIA: se ha detectado una posible dependencia de bloqueo circular 6.8.0-syzkaller-08951-gfe46a7dd189e #0 No contaminado ------------------------------------------------------ syz-executor386/5093 est\u00e1 intentando adquirir el bloqueo: ffff88807c396258 (sk_lock-AF_BLUETOOTH-BTPROTO_RFCOMM){+.+.}-{0:0}, en: lock_sock include/net/sock.h:1671 [en l\u00ednea] ffff88807c396258 (sk_lock-AF_BLUETOOTH-BTPROTO_RFCOMM){+.+.}-{0:0}, en: rfcomm_sk_state_change+0x5b/0x310 net/bluetooth/rfcomm/sock.c:73 pero la tarea ya tiene el bloqueo: ffff88807badfd28 (\u0026amp;d-\u0026gt;lock){+.+.}-{3:3}, en: __rfcomm_dlc_close+0x226/0x6a0 net/bluetooth/rfcomm/core.c:491\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"net/bluetooth/rfcomm/sock.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"3241ad820dbb172021e0268b5611031991431626\",\"lessThan\":\"b77b3fb12fd483cae7c28648903b1d8a6b275f01\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"3241ad820dbb172021e0268b5611031991431626\",\"lessThan\":\"869c6ee62ab8f01bf2419e45326642be5c9b670a\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"3241ad820dbb172021e0268b5611031991431626\",\"lessThan\":\"ef44274dae9b0a90d1a97ce8b242a3b8243a7745\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"3241ad820dbb172021e0268b5611031991431626\",\"lessThan\":\"496b2ab0fd10f205e08909a125485fdc98843dbe\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"3241ad820dbb172021e0268b5611031991431626\",\"lessThan\":\"ced98072d3511b232ae1d3347945f35f30c0e303\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"3241ad820dbb172021e0268b5611031991431626\",\"lessThan\":\"38b2d5a57d125e1c17661b8308c0240c4a43b534\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"3241ad820dbb172021e0268b5611031991431626\",\"lessThan\":\"4cb9807c9b53bf1e5560420d26f319f528b50268\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"3241ad820dbb172021e0268b5611031991431626\",\"lessThan\":\"08d1914293dae38350b8088980e59fbc699a72fe\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"net/bluetooth/rfcomm/sock.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"2.6.27\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"2.6.27\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"4.19.323\",\"lessThanOrEqual\":\"4.19.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.4.285\",\"lessThanOrEqual\":\"5.4.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.227\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.168\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.113\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.57\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.11.4\",\"lessThanOrEqual\":\"6.11.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]},{\"source\":\"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e\",\"affectedData\":[{\"vendor\":\"Siemens\",\"product\":\"RUGGEDCOM 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    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-06-28T08:08:15+00:00",
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      "id": "CVE-2024-50044",
      "initial_release_date": "2024-10-21T00:00:00+00:00",
      "product_status:fixed": "305",
      "product_status:known_affected": "112",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: Bluetooth: RFCOMM: FIX possible deadlock in rfcomm_sk_state_change",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-50044.json",
      "version": "3"
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      "current_release_date": "2026-08-29T01:44:22Z",
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      "initial_release_date": "2024-10-22T02:49:50Z",
      "product_status:known_affected": "644",
      "product_status:known_not_affected": "11",
      "product_status:recommended": "719",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2024-50044",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2024-50044.json",
      "version": "70"
    },
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\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"2.6.27\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"2.6.27\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"4.19.323\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.19.*\"}, {\"status\": \"unaffected\", \"version\": \"5.4.285\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.227\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.168\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.113\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.57\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.11.4\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.11.*\"}, {\"status\": \"unaffected\", \"version\": \"6.12\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"net/bluetooth/rfcomm/sock.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/b77b3fb12fd483cae7c28648903b1d8a6b275f01\"}, {\"url\": \"https://git.kernel.org/stable/c/869c6ee62ab8f01bf2419e45326642be5c9b670a\"}, {\"url\": \"https://git.kernel.org/stable/c/ef44274dae9b0a90d1a97ce8b242a3b8243a7745\"}, {\"url\": \"https://git.kernel.org/stable/c/496b2ab0fd10f205e08909a125485fdc98843dbe\"}, {\"url\": \"https://git.kernel.org/stable/c/ced98072d3511b232ae1d3347945f35f30c0e303\"}, {\"url\": \"https://git.kernel.org/stable/c/38b2d5a57d125e1c17661b8308c0240c4a43b534\"}, {\"url\": \"https://git.kernel.org/stable/c/4cb9807c9b53bf1e5560420d26f319f528b50268\"}, {\"url\": \"https://git.kernel.org/stable/c/08d1914293dae38350b8088980e59fbc699a72fe\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nBluetooth: RFCOMM: FIX possible deadlock in rfcomm_sk_state_change\\n\\nrfcomm_sk_state_change attempts to use sock_lock so it must never be\\ncalled with it locked but rfcomm_sock_ioctl always attempt to lock it\\ncausing the following trace:\\n\\n======================================================\\nWARNING: possible circular locking dependency detected\\n6.8.0-syzkaller-08951-gfe46a7dd189e #0 Not tainted\\n------------------------------------------------------\\nsyz-executor386/5093 is trying to acquire lock:\\nffff88807c396258 (sk_lock-AF_BLUETOOTH-BTPROTO_RFCOMM){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1671 [inline]\\nffff88807c396258 (sk_lock-AF_BLUETOOTH-BTPROTO_RFCOMM){+.+.}-{0:0}, at: rfcomm_sk_state_change+0x5b/0x310 net/bluetooth/rfcomm/sock.c:73\\n\\nbut task is already holding lock:\\nffff88807badfd28 (\u0026d-\u003elock){+.+.}-{3:3}, at: __rfcomm_dlc_close+0x226/0x6a0 net/bluetooth/rfcomm/core.c:491\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.323\", \"versionStartIncluding\": \"2.6.27\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.285\", \"versionStartIncluding\": \"2.6.27\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.227\", \"versionStartIncluding\": \"2.6.27\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.168\", \"versionStartIncluding\": \"2.6.27\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.113\", \"versionStartIncluding\": \"2.6.27\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.57\", \"versionStartIncluding\": \"2.6.27\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.11.4\", \"versionStartIncluding\": \"2.6.27\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.12\", \"versionStartIncluding\": \"2.6.27\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-11T20:44:24.572Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-50044\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-12T12:00:00.581Z\", \"dateReserved\": \"2024-10-21T12:17:06.071Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-10-21T19:39:42.430Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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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.