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CVE-2024-50249 (GCVE-0-2024-50249)

Vulnerability from cvelistv5 – Published: 2024-11-09 10:14 – Updated: 2026-05-23 15:54
VLAI
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)
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 20:15 UTC
CWE
Assigner
References
Impacted 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 Create a notification for this product.
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 Create a notification for this product.
Show details on NVD website
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      "id": "CVE-2024-50249",
      "lastModified": "2024-11-14T17:01:11.577",
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      "published": "2024-11-09T11:15:10.743",
      "references": "[{\"url\": \"https://git.kernel.org/stable/c/0eb2b767c42fac61ab23c4063eb456baa4c2c262\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/1c10941e34c5fdc0357e46a25bd130d9cf40b925\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/23039b4aaf1e82e0feea1060834d4ec34262e453\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/43b1df48d1e7000a214acd1a81b8012ca8a929c8\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/c46d6b02588000c27b7b869388c2c0278bd0d173\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}]",
      "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "vulnStatus": "Analyzed",
      "weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"NVD-CWE-noinfo\"}]}]"
    },
    "microsoft_vex": {
      "current_release_date": "2025-01-29T00:00:00.000Z",
      "cve": "CVE-2024-50249",
      "id": "msrc_CVE-2024-50249",
      "initial_release_date": "2024-11-02T00:00:00.000Z",
      "product_status:fixed": "3",
      "product_status:known_affected": "3",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "ACPI: CPPC: Make rmw_lock a raw_spin_lock",
      "url": "https://msrc.microsoft.com/csaf/vex/2024/msrc_cve-2024-50249.json",
      "version": "1"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-50249\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-11-09T11:15:10.743\",\"lastModified\":\"2026-06-17T08:04:00.423\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"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 ]\"},{\"lang\":\"es\",\"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 ]\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/acpi/cppc_acpi.c\",\"include/acpi/cppc_acpi.h\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"94e8c988468dafde1d2bfe0532a60a3117f6394b\",\"lessThan\":\"c46d6b02588000c27b7b869388c2c0278bd0d173\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f812ca13a0d3e3aa418da36b66ca40df0d6f9e60\",\"lessThan\":\"23039b4aaf1e82e0feea1060834d4ec34262e453\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"8ad28208be7bbe748e90442c45963ddbef0fd1e2\",\"lessThan\":\"0eb2b767c42fac61ab23c4063eb456baa4c2c262\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"20cde05aa8bcd7a5ff36a609d813189b7cdbe692\",\"lessThan\":\"43b1df48d1e7000a214acd1a81b8012ca8a929c8\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"60949b7b805424f21326b450ca4f1806c06d982e\",\"lessThan\":\"1c10941e34c5fdc0357e46a25bd130d9cf40b925\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"82cee12ada68dfd438c7faca152dbfe042868743\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6.10.13\",\"lessThan\":\"6.11\",\"versionType\":\"semver\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/acpi/cppc_acpi.c\",\"include/acpi/cppc_acpi.h\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.15.168\",\"lessThan\":\"5.15.171\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"6.1.113\",\"lessThan\":\"6.1.116\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"6.6.54\",\"lessThan\":\"6.6.60\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"6.11.2\",\"lessThan\":\"6.11.7\",\"versionType\":\"semver\",\"status\":\"affected\"}]}]}],\"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},{\"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\":\"2025-10-01T20:15:54.957362Z\",\"id\":\"CVE-2024-50249\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"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\":\"5.15.168\",\"versionEndExcluding\":\"5.15.171\",\"matchCriteriaId\":\"E7D1CD1E-855E-4C64-9844-472A5F946600\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.1.113\",\"versionEndExcluding\":\"6.1.116\",\"matchCriteriaId\":\"0784ED09-D629-4871-A504-544E89D6604D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.6.54\",\"versionEndExcluding\":\"6.6.60\",\"matchCriteriaId\":\"9948264B-EE9F-44AE-A53F-08F7E9AB2D6A\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.10.13\",\"versionEndExcluding\":\"6.11\",\"matchCriteriaId\":\"B88D322F-6F03-45A1-8C58-9E45EAB64B13\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.11.2\",\"versionEndExcluding\":\"6.11.7\",\"matchCriteriaId\":\"2E287E86-AA84-4156-B0BE-E96F7654E4A5\"},{\"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\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.12:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"E0F717D8-3014-4F84-8086-0124B2111379\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.12:rc5:*:*:*:*:*:*\",\"matchCriteriaId\":\"24DBE6C7-2AAE-4818-AED2-E131F153D2FA\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0eb2b767c42fac61ab23c4063eb456baa4c2c262\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/1c10941e34c5fdc0357e46a25bd130d9cf40b925\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/23039b4aaf1e82e0feea1060834d4ec34262e453\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/43b1df48d1e7000a214acd1a81b8012ca8a929c8\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/c46d6b02588000c27b7b869388c2c0278bd0d173\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}",
    "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"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-01T13:58:04Z",
      "cve": "CVE-2024-50249",
      "id": "CVE-2024-50249",
      "initial_release_date": "2024-11-10T03:49:14Z",
      "product_status:known_affected": "361",
      "product_status:known_not_affected": "352",
      "product_status:recommended": "555",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2024-50249",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2024-50249.json",
      "version": "54"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html\"}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2025-11-03T22:27:28.791Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"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\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-50249\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-10-01T20:15:54.957362Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"description\": \"CWE-noinfo Not enough information\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-10-01T15:24:48.383Z\"}}], \"cna\": {\"title\": \"ACPI: CPPC: Make rmw_lock a raw_spin_lock\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"94e8c988468dafde1d2bfe0532a60a3117f6394b\", \"lessThan\": \"c46d6b02588000c27b7b869388c2c0278bd0d173\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"f812ca13a0d3e3aa418da36b66ca40df0d6f9e60\", \"lessThan\": \"23039b4aaf1e82e0feea1060834d4ec34262e453\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": 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\"version\": \"6.1.113\", \"lessThan\": \"6.1.116\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"6.6.54\", \"lessThan\": \"6.6.60\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"6.11.2\", \"lessThan\": \"6.11.7\", \"versionType\": \"semver\"}], \"programFiles\": [\"drivers/acpi/cppc_acpi.c\", \"include/acpi/cppc_acpi.h\"], \"defaultStatus\": \"unaffected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/c46d6b02588000c27b7b869388c2c0278bd0d173\"}, {\"url\": \"https://git.kernel.org/stable/c/23039b4aaf1e82e0feea1060834d4ec34262e453\"}, {\"url\": \"https://git.kernel.org/stable/c/0eb2b767c42fac61ab23c4063eb456baa4c2c262\"}, {\"url\": \"https://git.kernel.org/stable/c/43b1df48d1e7000a214acd1a81b8012ca8a929c8\"}, {\"url\": \"https://git.kernel.org/stable/c/1c10941e34c5fdc0357e46a25bd130d9cf40b925\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"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 ]\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.171\", \"versionStartIncluding\": \"5.15.168\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.116\", \"versionStartIncluding\": \"6.1.113\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.60\", \"versionStartIncluding\": \"6.6.54\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.11.7\", \"versionStartIncluding\": \"6.11.2\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"6.10.13\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T13:00:02.349Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-50249\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-11-03T22:27:28.791Z\", \"dateReserved\": \"2024-10-21T19:36:19.979Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-11-09T10:14:57.833Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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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

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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.


Detection rules are retrieved from Rulezet.


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.