CVE-2024-50077

{"id": "CVE-2024-50077", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"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"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "published": "2024-10-29T01:15:04.773", "references": [{"url": "https://git.kernel.org/stable/c/8fb8e912afb4c47dec12ea9a5853e7a8db95816f", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/a9b7b535ba192c6b77e6c15a4c82d853163eab8c", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/adf1b179c2ff8073c24bf87e5a605fcc5a09798b", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/fa4b832c5a6ec35023a1b997cf658c436619c752", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "descriptions": [{"lang": "en", "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."}, {"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."}], "lastModified": "2024-11-01T16:00:06.247", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F8F22EB2-8271-4658-AAD7-36966F3C1A73", "versionEndExcluding": "6.1.114", "versionStartIncluding": "6.0"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6B9489BC-825E-4EEE-8D93-F93C801988C8", "versionEndExcluding": "6.6.58", "versionStartIncluding": "6.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6E62D61A-F704-44DB-A311-17B7534DA7BC", "versionEndExcluding": "6.11.5", "versionStartIncluding": "6.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7F361E1D-580F-4A2D-A509-7615F73167A1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "925478D0-3E3D-4E6F-ACD5-09F28D5DF82C"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "3C95E234-D335-4B6C-96BF-E2CEBD8654ED"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}