CVE-2025-38113
Full vulnerability record from the local CVENow database.
Description
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 ]
Severity
MEDIUM
CVSS score
5.5
(v3.1)
Vulnerability status
Analyzed
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2025-07-03 09:15:25.103000
Last modified
2026-11-05 21:18:10.357000
View original CVE JSON
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"published": "2025-07-03T09:15:25.103",
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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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