cve-2024-50077
Vulnerability from cvelistv5
Published
2024-10-29 00:50
Modified
2024-12-19 09:32
Severity ?
EPSS score ?
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.
References
Impacted products
{ "containers": { "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": "fa4b832c5a6ec35023a1b997cf658c436619c752", "status": "affected", "version": "ccf74f2390d60a2f9a75ef496d2564abb478f46a", "versionType": "git" }, { "lessThan": "8fb8e912afb4c47dec12ea9a5853e7a8db95816f", "status": "affected", "version": "ccf74f2390d60a2f9a75ef496d2564abb478f46a", "versionType": "git" }, { "lessThan": "adf1b179c2ff8073c24bf87e5a605fcc5a09798b", "status": "affected", "version": "ccf74f2390d60a2f9a75ef496d2564abb478f46a", "versionType": "git" }, { "lessThan": "a9b7b535ba192c6b77e6c15a4c82d853163eab8c", "status": "affected", "version": "ccf74f2390d60a2f9a75ef496d2564abb478f46a", "versionType": "git" } ] }, { "defaultStatus": "affected", "product": "Linux", "programFiles": [ "net/bluetooth/iso.c" ], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [ { "status": "affected", "version": "6.0" }, { "lessThan": "6.0", "status": "unaffected", "version": "0", "versionType": "semver" }, { "lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.114", "versionType": "semver" }, { "lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.58", "versionType": "semver" }, { "lessThanOrEqual": "6.11.*", "status": "unaffected", "version": "6.11.5", "versionType": "semver" }, { "lessThanOrEqual": "*", "status": "unaffected", "version": "6.12", "versionType": "original_commit_for_fix" } ] } ], "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." } ], "providerMetadata": { "dateUpdated": "2024-12-19T09:32:33.762Z", "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux" }, "references": [ { "url": "https://git.kernel.org/stable/c/fa4b832c5a6ec35023a1b997cf658c436619c752" }, { "url": "https://git.kernel.org/stable/c/8fb8e912afb4c47dec12ea9a5853e7a8db95816f" }, { "url": "https://git.kernel.org/stable/c/adf1b179c2ff8073c24bf87e5a605fcc5a09798b" }, { "url": "https://git.kernel.org/stable/c/a9b7b535ba192c6b77e6c15a4c82d853163eab8c" } ], "title": "Bluetooth: ISO: Fix multiple init when debugfs is disabled", "x_generator": { "engine": "bippy-5f407fcff5a0" } } }, "cveMetadata": { "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "assignerShortName": "Linux", "cveId": "CVE-2024-50077", "datePublished": "2024-10-29T00:50:19.412Z", "dateReserved": "2024-10-21T19:36:19.940Z", "dateUpdated": "2024-12-19T09:32:33.762Z", "state": "PUBLISHED" }, "dataType": "CVE_RECORD", "dataVersion": "5.1", "meta": { "nvd": "{\"cve\":{\"id\":\"CVE-2024-50077\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-10-29T01:15:04.773\",\"lastModified\":\"2024-11-01T16:00:06.247\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"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.\"}],\"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}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-noinfo\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.0\",\"versionEndExcluding\":\"6.1.114\",\"matchCriteriaId\":\"F8F22EB2-8271-4658-AAD7-36966F3C1A73\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.58\",\"matchCriteriaId\":\"6B9489BC-825E-4EEE-8D93-F93C801988C8\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.11.5\",\"matchCriteriaId\":\"6E62D61A-F704-44DB-A311-17B7534DA7BC\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"7F361E1D-580F-4A2D-A509-7615F73167A1\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.12:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"925478D0-3E3D-4E6F-ACD5-09F28D5DF82C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.12:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"3C95E234-D335-4B6C-96BF-E2CEBD8654ED\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/8fb8e912afb4c47dec12ea9a5853e7a8db95816f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/a9b7b535ba192c6b77e6c15a4c82d853163eab8c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/adf1b179c2ff8073c24bf87e5a605fcc5a09798b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/fa4b832c5a6ec35023a1b997cf658c436619c752\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}" } }
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Sightings
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Nomenclature
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