CVE-2025-38113 Information

Jul 04, 2025 cve

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] [] cppc_allow_fast_switch+0x6a/0xd4 … Kernel panic - not syncing: Attempted to kill init!

[ rjw: New subject ]

Reference

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

CNNVD-202507-198 (Published: 2025-07-03)

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