CVE-2024-50249 (GCVE-0-2024-50249)
Vulnerability from cvelistv5 – Published: 2024-11-09 10:14 – Updated: 2026-05-23 15:54
VLAI
EPSS
VEX
Title
ACPI: CPPC: Make rmw_lock a raw_spin_lock
Summary
In the Linux kernel, the following vulnerability has been resolved:
ACPI: CPPC: Make rmw_lock a raw_spin_lock
The following BUG was triggered:
=============================
[ BUG: Invalid wait context ]
6.12.0-rc2-XXX #406 Not tainted
-----------------------------
kworker/1:1/62 is trying to lock:
ffffff8801593030 (&cpc_ptr->rmw_lock){+.+.}-{3:3}, at: cpc_write+0xcc/0x370
other info that might help us debug this:
context-{5:5}
2 locks held by kworker/1:1/62:
#0: ffffff897ef5ec98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2c/0x50
#1: ffffff880154e238 (&sg_policy->update_lock){....}-{2:2}, at: sugov_update_shared+0x3c/0x280
stack backtrace:
CPU: 1 UID: 0 PID: 62 Comm: kworker/1:1 Not tainted 6.12.0-rc2-g9654bd3e8806 #406
Workqueue: 0x0 (events)
Call trace:
dump_backtrace+0xa4/0x130
show_stack+0x20/0x38
dump_stack_lvl+0x90/0xd0
dump_stack+0x18/0x28
__lock_acquire+0x480/0x1ad8
lock_acquire+0x114/0x310
_raw_spin_lock+0x50/0x70
cpc_write+0xcc/0x370
cppc_set_perf+0xa0/0x3a8
cppc_cpufreq_fast_switch+0x40/0xc0
cpufreq_driver_fast_switch+0x4c/0x218
sugov_update_shared+0x234/0x280
update_load_avg+0x6ec/0x7b8
dequeue_entities+0x108/0x830
dequeue_task_fair+0x58/0x408
__schedule+0x4f0/0x1070
schedule+0x54/0x130
worker_thread+0xc0/0x2e8
kthread+0x130/0x148
ret_from_fork+0x10/0x20
sugov_update_shared() locks a raw_spinlock while cpc_write() locks a
spinlock.
To have a correct wait-type order, update rmw_lock to a raw spinlock and
ensure that interrupts will be disabled on the CPU holding it.
[ rjw: Changelog edits ]
Severity
5.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-01 20:15 UTC
Assigner
References
6 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
94e8c988468dafde1d2bfe0532a60a3117f6394b , < c46d6b02588000c27b7b869388c2c0278bd0d173
(git)
Affected: f812ca13a0d3e3aa418da36b66ca40df0d6f9e60 , < 23039b4aaf1e82e0feea1060834d4ec34262e453 (git) Affected: 8ad28208be7bbe748e90442c45963ddbef0fd1e2 , < 0eb2b767c42fac61ab23c4063eb456baa4c2c262 (git) Affected: 20cde05aa8bcd7a5ff36a609d813189b7cdbe692 , < 43b1df48d1e7000a214acd1a81b8012ca8a929c8 (git) Affected: 60949b7b805424f21326b450ca4f1806c06d982e , < 1c10941e34c5fdc0357e46a25bd130d9cf40b925 (git) Affected: 82cee12ada68dfd438c7faca152dbfe042868743 (git) Affected: 6.10.13 , < 6.11 (semver) |
guessed | |
| Linux | Linux |
Affected:
5.15.168 , < 5.15.171
(semver)
Affected: 6.1.113 , < 6.1.116 (semver) Affected: 6.6.54 , < 6.6.60 (semver) Affected: 6.11.2 , < 6.11.7 (semver) |
guessed |
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nACPI: CPPC: Make rmw_lock a raw_spin_lock\n\nThe following BUG was triggered:\n\n=============================\n[ BUG: Invalid wait context ]\n6.12.0-rc2-XXX #406 Not tainted\n-----------------------------\nkworker/1:1/62 is trying to lock:\nffffff8801593030 (\u0026cpc_ptr-\u003ermw_lock){+.+.}-{3:3}, at: cpc_write+0xcc/0x370\nother info that might help us debug this:\ncontext-{5:5}\n2 locks held by kworker/1:1/62:\n #0: ffffff897ef5ec98 (\u0026rq-\u003e__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2c/0x50\n #1: ffffff880154e238 (\u0026sg_policy-\u003eupdate_lock){....}-{2:2}, at: sugov_update_shared+0x3c/0x280\nstack backtrace:\nCPU: 1 UID: 0 PID: 62 Comm: kworker/1:1 Not tainted 6.12.0-rc2-g9654bd3e8806 #406\nWorkqueue: 0x0 (events)\nCall trace:\n dump_backtrace+0xa4/0x130\n show_stack+0x20/0x38\n dump_stack_lvl+0x90/0xd0\n dump_stack+0x18/0x28\n __lock_acquire+0x480/0x1ad8\n lock_acquire+0x114/0x310\n _raw_spin_lock+0x50/0x70\n cpc_write+0xcc/0x370\n cppc_set_perf+0xa0/0x3a8\n cppc_cpufreq_fast_switch+0x40/0xc0\n cpufreq_driver_fast_switch+0x4c/0x218\n sugov_update_shared+0x234/0x280\n update_load_avg+0x6ec/0x7b8\n dequeue_entities+0x108/0x830\n dequeue_task_fair+0x58/0x408\n __schedule+0x4f0/0x1070\n schedule+0x54/0x130\n worker_thread+0xc0/0x2e8\n kthread+0x130/0x148\n ret_from_fork+0x10/0x20\n\nsugov_update_shared() locks a raw_spinlock while cpc_write() locks a\nspinlock.\n\nTo have a correct wait-type order, update rmw_lock to a raw spinlock and\nensure that interrupts will be disabled on the CPU holding it.\n\n[ rjw: Changelog edits ]"
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"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ACPI: CPPC: Convertir rmw_lock en raw_spin_lock Se activ\u00f3 el siguiente ERROR: ============================= [ ERROR: Contexto de espera no v\u00e1lido ] 6.12.0-rc2-XXX #406 No contaminado ----------------------------- kworker/1:1/62 est\u00e1 intentando bloquear: ffffff8801593030 (\u0026amp;cpc_ptr-\u0026gt;rmw_lock){+.+.}-{3:3}, en: cpc_write+0xcc/0x370 otra informaci\u00f3n que podr\u00eda ayudarnos a depurar esto: context-{5:5} 2 bloqueos mantenidos por kworker/1:1/62: #0: ffffff897ef5ec98 (\u0026amp;rq-\u0026gt;__lock){-.-.}-{2:2}, en: raw_spin_rq_lock_nested+0x2c/0x50 #1: ffffff880154e238 (\u0026amp;sg_policy-\u0026gt;update_lock){....}-{2:2}, en: sugov_update_shared+0x3c/0x280 seguimiento de pila: CPU: 1 UID: 0 PID: 62 Comm: kworker/1:1 No contaminado 6.12.0-rc2-g9654bd3e8806 #406 Cola de trabajo: 0x0 (eventos) Seguimiento de llamadas: dump_backtrace+0xa4/0x130 show_stack+0x20/0x38 dump_stack_lvl+0x90/0xd0 dump_stack+0x18/0x28 __lock_acquire+0x480/0x1ad8 bloqueo_adquisici\u00f3n+0x114/0x310 bloqueo_giro_sin_engranaje+0x50/0x70 escritura_cpc+0xcc/0x370 rendimiento_establecimiento_cppc+0xa0/0x3a8 cambio_r\u00e1pido_de_frecuencia_de_cpuc+0x40/0xc0 cambio_r\u00e1pido_de_controlador_de_frecuencia_de_cpu+0x4c/0x218 actualizaci\u00f3n_compartida_sugov+0x234/0x280 promedio_de_carga_actualizaci\u00f3n+0x6ec/0x7b8 entidades_de_la_cola+0x108/0x830 tarea_de_la_cola_justa+0x58/0x408 __programaci\u00f3n+0x4f0/0x1070 programaci\u00f3n+0x54/0x130 subproceso_de_trabajo+0xc0/0x2e8 kthread+0x130/0x148 ret_from_fork+0x10/0x20 sugov_update_shared() bloquea un raw_spinlock mientras que cpc_write() bloquea un spinlock. Para tener un orden de espera correcto, actualice rmw_lock a un spinlock sin procesar y aseg\u00farese de que las interrupciones se desactiven en la CPU que lo contiene. [ rjw: ediciones del registro de cambios ]"
}
],
"id": "CVE-2024-50249",
"lastModified": "2026-06-17T08:04:00.423",
"metrics": {
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"attackVector": "LOCAL",
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"baseScore": 5.5,
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"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
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},
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"type": "Primary"
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"confidentialityImpact": "NONE",
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"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
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"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary"
}
],
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{
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"role": "CISA Coordinator",
"timestamp": "2025-10-01T20:15:54.957362Z",
"version": "2.0.3"
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"published": "2024-11-09T11:15:10.743",
"references": [
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"tags": [
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"url": "https://git.kernel.org/stable/c/0eb2b767c42fac61ab23c4063eb456baa4c2c262"
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{
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"url": "https://git.kernel.org/stable/c/1c10941e34c5fdc0357e46a25bd130d9cf40b925"
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"url": "https://git.kernel.org/stable/c/c46d6b02588000c27b7b869388c2c0278bd0d173"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Modified",
"weaknesses": [
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"lang": "en",
"value": "NVD-CWE-noinfo"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
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]
}
},
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2025-11-21T13:51:42+00:00",
"cve": "CVE-2024-50249",
"id": "CVE-2024-50249",
"initial_release_date": "2024-11-09T00:00:00+00:00",
"product_status:known_affected": "28",
"product_status:known_not_affected": "170",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: ACPI: CPPC: Make rmw_lock a raw_spin_lock",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-50249.json",
"version": "3"
},
"vulnrichment": {
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2025-11-03T22:27:28.791Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
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"url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
}
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"title": "CVE Program Container"
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"metrics": [
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"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 5.5,
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"confidentialityImpact": "NONE",
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"scope": "UNCHANGED",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
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},
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"other": {
"content": {
"id": "CVE-2024-50249",
"options": [
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},
{
"Automatable": "no"
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{
"Technical Impact": "partial"
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"role": "CISA Coordinator",
"timestamp": "2025-10-01T20:15:54.957362Z",
"version": "2.0.3"
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"type": "ssvc"
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],
"problemTypes": [
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"descriptions": [
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"description": "CWE-noinfo Not enough information",
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],
"providerMetadata": {
"dateUpdated": "2025-10-01T15:24:48.383Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/acpi/cppc_acpi.c",
"include/acpi/cppc_acpi.h"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
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"lessThan": "c46d6b02588000c27b7b869388c2c0278bd0d173",
"status": "affected",
"version": "94e8c988468dafde1d2bfe0532a60a3117f6394b",
"versionType": "git"
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{
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
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{
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},
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"status": "affected",
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],
"cpeApplicability": [
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"nodes": [
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"cpeMatch": [
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"negate": false,
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"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nACPI: CPPC: Make rmw_lock a raw_spin_lock\n\nThe following BUG was triggered:\n\n=============================\n[ BUG: Invalid wait context ]\n6.12.0-rc2-XXX #406 Not tainted\n-----------------------------\nkworker/1:1/62 is trying to lock:\nffffff8801593030 (\u0026cpc_ptr-\u003ermw_lock){+.+.}-{3:3}, at: cpc_write+0xcc/0x370\nother info that might help us debug this:\ncontext-{5:5}\n2 locks held by kworker/1:1/62:\n #0: ffffff897ef5ec98 (\u0026rq-\u003e__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2c/0x50\n #1: ffffff880154e238 (\u0026sg_policy-\u003eupdate_lock){....}-{2:2}, at: sugov_update_shared+0x3c/0x280\nstack backtrace:\nCPU: 1 UID: 0 PID: 62 Comm: kworker/1:1 Not tainted 6.12.0-rc2-g9654bd3e8806 #406\nWorkqueue: 0x0 (events)\nCall trace:\n dump_backtrace+0xa4/0x130\n show_stack+0x20/0x38\n dump_stack_lvl+0x90/0xd0\n dump_stack+0x18/0x28\n __lock_acquire+0x480/0x1ad8\n lock_acquire+0x114/0x310\n _raw_spin_lock+0x50/0x70\n cpc_write+0xcc/0x370\n cppc_set_perf+0xa0/0x3a8\n cppc_cpufreq_fast_switch+0x40/0xc0\n cpufreq_driver_fast_switch+0x4c/0x218\n sugov_update_shared+0x234/0x280\n update_load_avg+0x6ec/0x7b8\n dequeue_entities+0x108/0x830\n dequeue_task_fair+0x58/0x408\n __schedule+0x4f0/0x1070\n schedule+0x54/0x130\n worker_thread+0xc0/0x2e8\n kthread+0x130/0x148\n ret_from_fork+0x10/0x20\n\nsugov_update_shared() locks a raw_spinlock while cpc_write() locks a\nspinlock.\n\nTo have a correct wait-type order, update rmw_lock to a raw spinlock and\nensure that interrupts will be disabled on the CPU holding it.\n\n[ rjw: Changelog edits ]"
}
],
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"dateUpdated": "2025-05-04T13:00:02.349Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
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"references": [
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"url": "https://git.kernel.org/stable/c/c46d6b02588000c27b7b869388c2c0278bd0d173"
},
{
"url": "https://git.kernel.org/stable/c/23039b4aaf1e82e0feea1060834d4ec34262e453"
},
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"url": "https://git.kernel.org/stable/c/0eb2b767c42fac61ab23c4063eb456baa4c2c262"
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},
{
"url": "https://git.kernel.org/stable/c/1c10941e34c5fdc0357e46a25bd130d9cf40b925"
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],
"title": "ACPI: CPPC: Make rmw_lock a raw_spin_lock",
"x_generator": {
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}
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"cveMetadata": {
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"cveId": "CVE-2024-50249",
"datePublished": "2024-11-09T10:14:57.833Z",
"dateReserved": "2024-10-21T19:36:19.979Z",
"dateUpdated": "2025-11-03T22:27:28.791Z",
"state": "PUBLISHED"
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"dataType": "CVE_RECORD",
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}
}
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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.
Vulnerability timeline
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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.
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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.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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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.