CVE-2024-50077 (GCVE-0-2024-50077)

Vulnerability from cvelistv5 – Published: 2024-10-29 00:50 – Updated: 2026-08-05 11:41
VLAI
Title
Bluetooth: ISO: Fix multiple init when debugfs is disabled
Summary
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ISO: Fix multiple init when debugfs is disabled If bt_debugfs is not created successfully, which happens if either CONFIG_DEBUG_FS or CONFIG_DEBUG_FS_ALLOW_ALL is unset, then iso_init() returns early and does not set iso_inited to true. This means that a subsequent call to iso_init() will result in duplicate calls to proto_register(), bt_sock_register(), etc. With CONFIG_LIST_HARDENED and CONFIG_BUG_ON_DATA_CORRUPTION enabled, the duplicate call to proto_register() triggers this BUG(): list_add double add: new=ffffffffc0b280d0, prev=ffffffffbab56250, next=ffffffffc0b280d0. ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:35! Oops: invalid opcode: 0000 [#1] PREEMPT SMP PTI CPU: 2 PID: 887 Comm: bluetoothd Not tainted 6.10.11-1-ao-desktop #1 RIP: 0010:__list_add_valid_or_report+0x9a/0xa0 ... __list_add_valid_or_report+0x9a/0xa0 proto_register+0x2b5/0x340 iso_init+0x23/0x150 [bluetooth] set_iso_socket_func+0x68/0x1b0 [bluetooth] kmem_cache_free+0x308/0x330 hci_sock_sendmsg+0x990/0x9e0 [bluetooth] __sock_sendmsg+0x7b/0x80 sock_write_iter+0x9a/0x110 do_iter_readv_writev+0x11d/0x220 vfs_writev+0x180/0x3e0 do_writev+0xca/0x100 ... This change removes the early return. The check for iso_debugfs being NULL was unnecessary, it is always NULL when iso_inited is false.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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 20:23 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: ccf74f2390d60a2f9a75ef496d2564abb478f46a , < fa4b832c5a6ec35023a1b997cf658c436619c752 (git)
Affected: ccf74f2390d60a2f9a75ef496d2564abb478f46a , < 8fb8e912afb4c47dec12ea9a5853e7a8db95816f (git)
Affected: ccf74f2390d60a2f9a75ef496d2564abb478f46a , < adf1b179c2ff8073c24bf87e5a605fcc5a09798b (git)
Affected: ccf74f2390d60a2f9a75ef496d2564abb478f46a , < a9b7b535ba192c6b77e6c15a4c82d853163eab8c (git)
guessed Create a notification for this product.
Linux Linux Affected: 6.0
Unaffected: 0 , < 6.0 (semver)
Unaffected: 6.1.114 , ≤ 6.1.* (semver)
Unaffected: 6.6.58 , ≤ 6.6.* (semver)
Unaffected: 6.11.5 , ≤ 6.11.* (semver)
Unaffected: 6.12 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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          "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: Bluetooth: ISO: Fix multiple init when debugfs is disabled Si bt_debugfs no se crea correctamente, lo que sucede si CONFIG_DEBUG_FS o CONFIG_DEBUG_FS_ALLOW_ALL no est\u00e1n configurados, entonces iso_init() regresa antes y no configura iso_inited como verdadero. Esto significa que una llamada posterior a iso_init() dar\u00e1 como resultado llamadas duplicadas a proto_register(), bt_sock_register(), etc. Con CONFIG_LIST_HARDENED y CONFIG_BUG_ON_DATA_CORRUPTION habilitados, la llamada duplicada a proto_register() activa este BUG(): list_add double add: new=ffffffffc0b280d0, prev=ffffffffbab56250, next=ffffffffc0b280d0. ------------[ cortar aqu\u00ed ]------------ \u00a1ERROR del kernel en lib/list_debug.c:35! Ups: c\u00f3digo de operaci\u00f3n no v\u00e1lido: 0000 [#1] PREEMPT SMP PTI CPU: 2 PID: 887 Comm: bluetoothd No contaminado 6.10.11-1-ao-desktop #1 RIP: 0010:__list_add_valid_or_report+0x9a/0xa0 ... __list_add_valid_or_report+0x9a/0xa0 proto_register+0x2b5/0x340 iso_init+0x23/0x150 [bluetooth] set_iso_socket_func+0x68/0x1b0 [bluetooth] kmem_cache_free+0x308/0x330 hci_sock_sendmsg+0x990/0x9e0 [bluetooth] __sock_sendmsg+0x7b/0x80 sock_write_iter+0x9a/0x110 do_iter_readv_writev+0x11d/0x220 vfs_writev+0x180/0x3e0 do_writev+0xca/0x100 ... Este cambio elimina el retorno anticipado. La comprobaci\u00f3n de que iso_debugfs sea NULL no era necesaria, siempre es NULL cuando iso_inited es falso."
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            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: ISO: Fix multiple init when debugfs is disabled\n\nIf bt_debugfs is not created successfully, which happens if either\nCONFIG_DEBUG_FS or CONFIG_DEBUG_FS_ALLOW_ALL is unset, then iso_init()\nreturns early and does not set iso_inited to true. This means that a\nsubsequent call to iso_init() will result in duplicate calls to\nproto_register(), bt_sock_register(), etc.\n\nWith CONFIG_LIST_HARDENED and CONFIG_BUG_ON_DATA_CORRUPTION enabled, the\nduplicate call to proto_register() triggers this BUG():\n\n  list_add double add: new=ffffffffc0b280d0, prev=ffffffffbab56250,\n    next=ffffffffc0b280d0.\n  ------------[ cut here ]------------\n  kernel BUG at lib/list_debug.c:35!\n  Oops: invalid opcode: 0000 [#1] PREEMPT SMP PTI\n  CPU: 2 PID: 887 Comm: bluetoothd Not tainted 6.10.11-1-ao-desktop #1\n  RIP: 0010:__list_add_valid_or_report+0x9a/0xa0\n  ...\n    __list_add_valid_or_report+0x9a/0xa0\n    proto_register+0x2b5/0x340\n    iso_init+0x23/0x150 [bluetooth]\n    set_iso_socket_func+0x68/0x1b0 [bluetooth]\n    kmem_cache_free+0x308/0x330\n    hci_sock_sendmsg+0x990/0x9e0 [bluetooth]\n    __sock_sendmsg+0x7b/0x80\n    sock_write_iter+0x9a/0x110\n    do_iter_readv_writev+0x11d/0x220\n    vfs_writev+0x180/0x3e0\n    do_writev+0xca/0x100\n  ...\n\nThis change removes the early return. The check for iso_debugfs being\nNULL was unnecessary, it is always NULL when iso_inited is false."
          },
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            "lang": "es",
            "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: Bluetooth: ISO: Fix multiple init when debugfs is disabled Si bt_debugfs no se crea correctamente, lo que sucede si CONFIG_DEBUG_FS o CONFIG_DEBUG_FS_ALLOW_ALL no est\u00e1n configurados, entonces iso_init() regresa antes y no configura iso_inited como verdadero. Esto significa que una llamada posterior a iso_init() dar\u00e1 como resultado llamadas duplicadas a proto_register(), bt_sock_register(), etc. Con CONFIG_LIST_HARDENED y CONFIG_BUG_ON_DATA_CORRUPTION habilitados, la llamada duplicada a proto_register() activa este BUG(): list_add double add: new=ffffffffc0b280d0, prev=ffffffffbab56250, next=ffffffffc0b280d0. ------------[ cortar aqu\u00ed ]------------ \u00a1ERROR del kernel en lib/list_debug.c:35! Ups: c\u00f3digo de operaci\u00f3n no v\u00e1lido: 0000 [#1] PREEMPT SMP PTI CPU: 2 PID: 887 Comm: bluetoothd No contaminado 6.10.11-1-ao-desktop #1 RIP: 0010:__list_add_valid_or_report+0x9a/0xa0 ... __list_add_valid_or_report+0x9a/0xa0 proto_register+0x2b5/0x340 iso_init+0x23/0x150 [bluetooth] set_iso_socket_func+0x68/0x1b0 [bluetooth] kmem_cache_free+0x308/0x330 hci_sock_sendmsg+0x990/0x9e0 [bluetooth] __sock_sendmsg+0x7b/0x80 sock_write_iter+0x9a/0x110 do_iter_readv_writev+0x11d/0x220 vfs_writev+0x180/0x3e0 do_writev+0xca/0x100 ... Este cambio elimina el retorno anticipado. La comprobaci\u00f3n de que iso_debugfs sea NULL no era necesaria, siempre es NULL cuando iso_inited es falso."
          }
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            }
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        "state": "PUBLISHED"
      },
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  }
}



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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.



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.