CVE-2025-38113
Estado: AnalizadaMedia (5.5)—
In the Linux kernel, the following vulnerability has been resolved:
ACPI: CPPC: Fix NULL pointer dereference when nosmp is used
With nosmp in cmdline, other CPUs are not brought up, leaving their cpc_desc_ptr NULL. CPU0's iteration via for_each_possible_cpu() dereferences these NULL pointers, causing panic.
Panic backtrace:
[ 0.401123] Unable to handle kernel NULL pointer dereference at virtual address 00000000000000b8 ... [ 0.403255] [<ffffffff809a5818>] cppc_allow_fast_switch+0x6a/0xd4 ... Kernel panic - not syncing: Attempted to kill init!
[ rjw: New subject ]
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: 0.19%
- Percentil entre todas las CVEs puntuadas: 8
- Fecha de la puntuación: 5/10/2026
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-476
Referencias
- https://git.kernel.org/stable/c/15eece6c5b05e5f9db0711978c3e3b7f1a2cfe12
- https://git.kernel.org/stable/c/1a677d0ceb4a5d62117b711a8b2e0aee80d33015
- https://git.kernel.org/stable/c/32a48db4cf28ea087214c261da8476db218d08bd
- https://git.kernel.org/stable/c/356d09c7f5bf525086002a34f8bae40b134d1611
- https://git.kernel.org/stable/c/c6dad167aade4bf0bef9130f2f149f4249fc4ad0
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
JSON original (NVD)
Mostrar
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nACPI: CPPC: Fix NULL pointer dereference when nosmp is used\n\nWith nosmp in cmdline, other CPUs are not brought up, leaving\ntheir cpc_desc_ptr NULL. CPU0's iteration via for_each_possible_cpu()\ndereferences these NULL pointers, causing panic.\n\nPanic backtrace:\n\n[ 0.401123] Unable to handle kernel NULL pointer dereference at virtual address 00000000000000b8\n...\n[ 0.403255] [<ffffffff809a5818>] cppc_allow_fast_switch+0x6a/0xd4\n...\nKernel panic - not syncing: Attempted to kill init!\n\n[ rjw: New subject ]"
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"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ACPI: CPPC: Se corrige la desreferencia de punteros nulos al usar nosmp. Con nosmp en la línea de comandos, no se inician otras CPU, dejando su cpc_desc_ptr en NULL. La iteración de la CPU0 mediante for_each_possible_cpu() desreferencia estos punteros nulos, lo que provoca pánico. Seguimiento de pánico: [0.401123] No se puede gestionar la desreferencia de punteros nulos del kernel en la dirección virtual 0000000000000b8 ... [0.403255] [] cppc_allow_fast_switch+0x6a/0xd4 ... Pánico del kernel: no se sincroniza: ¡Se intentó detener la inicialización! [rjw: Nuevo asunto]"
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