CVE-2025-23161
Estado: AnalizadaMedia (5.5)—
In the Linux kernel, the following vulnerability has been resolved:
PCI: vmd: Make vmd_dev::cfg_lock a raw_spinlock_t type
The access to the PCI config space via pci_ops::read and pci_ops::write is a low-level hardware access. The functions can be accessed with disabled interrupts even on PREEMPT_RT. The pci_lock is a raw_spinlock_t for this purpose.
A spinlock_t becomes a sleeping lock on PREEMPT_RT, so it cannot be acquired with disabled interrupts. The vmd_dev::cfg_lock is accessed in the same context as the pci_lock.
Make vmd_dev::cfg_lock a raw_spinlock_t type so it can be used with interrupts disabled.
Leer descripción completaMostrar menos
This was reported as:
[bigeasy: reword commit message] Tested-off-by: Luis Claudio R. Goncalves <lgoncalv@redhat.com> [kwilczynski: commit log] [bhelgaas: add back report info from https://lore.kernel.org/lkml/20241218115951.83062-1-ryotkkr98@gmail.com/]
Detalles técnicos trazas, registros y código del informe original
BUG: sleeping function called from invalid context at kernel/locking/spinlock_rt.c:48 Call Trace: rt_spin_lock+0x4e/0x130 vmd_pci_read+0x8d/0x100 [vmd] pci_user_read_config_byte+0x6f/0xe0 pci_read_config+0xfe/0x290 sysfs_kf_bin_read+0x68/0x90
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Puntuación base: 5.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.15%
- Percentil entre todas las CVEs puntuadas: 4
- Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (2)
CWE
- CWE-667
Referencias
- https://git.kernel.org/stable/c/13e5148f70e81991acbe0bab5b1b50ba699116e7
- https://git.kernel.org/stable/c/18056a48669a040bef491e63b25896561ee14d90
- https://git.kernel.org/stable/c/20d0a9062c031068fa39f725a32f182b709b5525
- https://git.kernel.org/stable/c/2358046ead696ca5c7c628d6c0e2c6792619a3e5
- https://git.kernel.org/stable/c/5c3cfcf0b4bf43530788b08a8eaf7896ec567484
- https://git.kernel.org/stable/c/c250262d6485ca333e9821f85b07eb383ec546b1
- https://git.kernel.org/stable/c/c2968c812339593ac6e2bdd5cc3adabe3f05fa53
- https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html
JSON original (NVD)
Mostrar
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nPCI: vmd: Make vmd_dev::cfg_lock a raw_spinlock_t type\n\nThe access to the PCI config space via pci_ops::read and pci_ops::write is\na low-level hardware access. The functions can be accessed with disabled\ninterrupts even on PREEMPT_RT. The pci_lock is a raw_spinlock_t for this\npurpose.\n\nA spinlock_t becomes a sleeping lock on PREEMPT_RT, so it cannot be\nacquired with disabled interrupts. The vmd_dev::cfg_lock is accessed in\nthe same context as the pci_lock.\n\nMake vmd_dev::cfg_lock a raw_spinlock_t type so it can be used with\ninterrupts disabled.\n\nThis was reported as:\n\n BUG: sleeping function called from invalid context at kernel/locking/spinlock_rt.c:48\n Call Trace:\n rt_spin_lock+0x4e/0x130\n vmd_pci_read+0x8d/0x100 [vmd]\n pci_user_read_config_byte+0x6f/0xe0\n pci_read_config+0xfe/0x290\n sysfs_kf_bin_read+0x68/0x90\n\n[bigeasy: reword commit message]\nTested-off-by: Luis Claudio R. Goncalves <lgoncalv@redhat.com>\n[kwilczynski: commit log]\n[bhelgaas: add back report info from\nhttps://lore.kernel.org/lkml/20241218115951.83062-1-ryotkkr98@gmail.com/]"
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: PCI: vmd: Convertir vmd_dev::cfg_lock en tipo raw_spinlock_t El acceso al espacio de configuración PCI mediante pci_ops::read y pci_ops::write es un acceso de hardware de bajo nivel. Se puede acceder a las funciones con interrupciones deshabilitadas incluso en PREEMPT_RT. El pci_lock es un raw_spinlock_t para este propósito. Un spinlock_t se convierte en un bloqueo inactivo en PREEMPT_RT, por lo que no se puede adquirir con interrupciones deshabilitadas. Se accede a vmd_dev::cfg_lock en el mismo contexto que el pci_lock. Convertir vmd_dev::cfg_lock en un tipo raw_spinlock_t para que pueda usarse con interrupciones deshabilitadas. Esto se informó como: ERROR: función inactiva llamada desde un contexto no válido en kernel/locking/spinlock_rt.c:48 Rastreo de llamadas: rt_spin_lock+0x4e/0x130 vmd_pci_read+0x8d/0x100 [vmd] pci_user_read_config_byte+0x6f/0xe0 pci_read_config+0xfe/0x290 sysfs_kf_bin_read+0x68/0x90 [bigeasy: reformular el mensaje de confirmación] Probado por: Luis Claudio R. Goncalves [kwilczynski: registro de confirmaciones] [bhelgaas: agregar información del informe de https://lore.kernel.org/lkml/20241218115951.83062-1-ryotkkr98@gmail.com/]"
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"lastModified": "2026-06-17T08:52:17.103",
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