CVE-2024-50249

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2024-50249
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 ]

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/0eb2b767c42fac61ab23c4063eb456baa4c2c262 Patch
https://git.kernel.org/stable/c/1c10941e34c5fdc0357e46a25bd130d9cf40b925 Patch
https://git.kernel.org/stable/c/23039b4aaf1e82e0feea1060834d4ec34262e453 Patch
https://git.kernel.org/stable/c/43b1df48d1e7000a214acd1a81b8012ca8a929c8 Patch
https://git.kernel.org/stable/c/c46d6b02588000c27b7b869388c2c0278bd0d173 Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.12:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.12:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.12:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.12:rc5:*:*:*:*:*:*
History

14 Nov 2024, 17:01

Type Values Removed Values Added
CWE NVD-CWE-noinfo
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.12:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.12:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.12:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.12:rc5:*:*:*:*:*:*
References () https://git.kernel.org/stable/c/0eb2b767c42fac61ab23c4063eb456baa4c2c262 - () https://git.kernel.org/stable/c/0eb2b767c42fac61ab23c4063eb456baa4c2c262 - Patch
References () https://git.kernel.org/stable/c/1c10941e34c5fdc0357e46a25bd130d9cf40b925 - () https://git.kernel.org/stable/c/1c10941e34c5fdc0357e46a25bd130d9cf40b925 - Patch
References () https://git.kernel.org/stable/c/23039b4aaf1e82e0feea1060834d4ec34262e453 - () https://git.kernel.org/stable/c/23039b4aaf1e82e0feea1060834d4ec34262e453 - Patch
References () https://git.kernel.org/stable/c/43b1df48d1e7000a214acd1a81b8012ca8a929c8 - () https://git.kernel.org/stable/c/43b1df48d1e7000a214acd1a81b8012ca8a929c8 - Patch
References () https://git.kernel.org/stable/c/c46d6b02588000c27b7b869388c2c0278bd0d173 - () https://git.kernel.org/stable/c/c46d6b02588000c27b7b869388c2c0278bd0d173 - Patch
First Time Linux linux Kernel
Linux
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5

12 Nov 2024, 13:56

Type Values Removed Values Added
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ACPI: CPPC: Convertir rmw_lock en raw_spin_lock Se activó el siguiente ERROR: ============================= [ ERROR: Contexto de espera no válido ] 6.12.0-rc2-XXX #406 No contaminado ----------------------------- kworker/1:1/62 está intentando bloquear: ffffff8801593030 (&cpc_ptr->rmw_lock){+.+.}-{3:3}, en: cpc_write+0xcc/0x370 otra información que podría ayudarnos a depurar esto: context-{5:5} 2 bloqueos mantenidos por kworker/1:1/62: #0: ffffff897ef5ec98 (&rq->__lock){-.-.}-{2:2}, en: raw_spin_rq_lock_nested+0x2c/0x50 #1: ffffff880154e238 (&sg_policy->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_adquisición+0x114/0x310 bloqueo_giro_sin_engranaje+0x50/0x70 escritura_cpc+0xcc/0x370 rendimiento_establecimiento_cppc+0xa0/0x3a8 cambio_rápido_de_frecuencia_de_cpuc+0x40/0xc0 cambio_rápido_de_controlador_de_frecuencia_de_cpu+0x4c/0x218 actualización_compartida_sugov+0x234/0x280 promedio_de_carga_actualización+0x6ec/0x7b8 entidades_de_la_cola+0x108/0x830 tarea_de_la_cola_justa+0x58/0x408 __programación+0x4f0/0x1070 programación+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 asegúrese de que las interrupciones se desactiven en la CPU que lo contiene. [ rjw: ediciones del registro de cambios ]

09 Nov 2024, 11:15

Type Values Removed Values Added
New CVE
Information

Published : 2024-11-09 11:15

Updated : 2024-11-14 17:01

NVD link : CVE-2024-50249

Mitre link : CVE-2024-50249

CVE.ORG link : CVE-2024-50249

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
NVD-CWE-noinfo