CVE-2024-50077 (GCVE-0-2024-50077)
Vulnerability from cvelistv5 – Published: 2024-10-29 00:50 – Updated: 2026-08-05 11:41
VLAI
EPSS
VEX
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)
5.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-01 20:23 UTC
Assigner
References
Impacted products
2 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 | |
| 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 |
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"nvd": "{\"cve\":{\"id\":\"CVE-2024-50077\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-10-29T01:15:04.773\",\"lastModified\":\"2026-08-04T11:21:15.653\",\"vulnStatus\":\"Modified\",\"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.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"net/bluetooth/iso.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"ccf74f2390d60a2f9a75ef496d2564abb478f46a\",\"lessThan\":\"fa4b832c5a6ec35023a1b997cf658c436619c752\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"ccf74f2390d60a2f9a75ef496d2564abb478f46a\",\"lessThan\":\"8fb8e912afb4c47dec12ea9a5853e7a8db95816f\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"ccf74f2390d60a2f9a75ef496d2564abb478f46a\",\"lessThan\":\"adf1b179c2ff8073c24bf87e5a605fcc5a09798b\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"ccf74f2390d60a2f9a75ef496d2564abb478f46a\",\"lessThan\":\"a9b7b535ba192c6b77e6c15a4c82d853163eab8c\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"net/bluetooth/iso.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.0\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.0\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.114\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.58\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.11.5\",\"lessThanOrEqual\":\"6.11.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9},{\"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},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"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}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2025-10-01T20:23:28.558687Z\",\"id\":\"CVE-2024-50077\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA 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"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-09-13T18:28:18+00:00",
"cve": "CVE-2024-50077",
"id": "CVE-2024-50077",
"initial_release_date": "2024-10-29T00:00:00+00:00",
"product_status:fixed": "305",
"product_status:known_affected": "64",
"product_status:known_not_affected": "48",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: Bluetooth: ISO: Fix multiple init when debugfs is disabled",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-50077.json",
"version": "3"
},
"vulnrichment": {
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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.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.114\", \"versionStartIncluding\": \"6.0\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.58\", \"versionStartIncluding\": \"6.0\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.11.5\", \"versionStartIncluding\": \"6.0\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.12\", \"versionStartIncluding\": \"6.0\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-11T20:44:58.382Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2024-50077\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-11T20:44:58.382Z\", \"dateReserved\": \"2024-10-21T19:36:19.940Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-10-29T00:50:19.412Z\", \"assignerShortName\": \"Linux\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
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.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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