CVE-2025-38113

Summary

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 ]

Affected Software

VendorProductVersion RangeStatus
LinuxLinux3cc30dd00a580ca0c9c0b01639841cfd72d10129 < 356d09c7f5bf525086002a34f8bae40b134d1611affected
LinuxLinux3cc30dd00a580ca0c9c0b01639841cfd72d10129 < c6dad167aade4bf0bef9130f2f149f4249fc4ad0affected
LinuxLinux3cc30dd00a580ca0c9c0b01639841cfd72d10129 < 32a48db4cf28ea087214c261da8476db218d08bdaffected
LinuxLinux3cc30dd00a580ca0c9c0b01639841cfd72d10129 < 1a677d0ceb4a5d62117b711a8b2e0aee80d33015affected
LinuxLinux3cc30dd00a580ca0c9c0b01639841cfd72d10129 < 15eece6c5b05e5f9db0711978c3e3b7f1a2cfe12affected
LinuxLinux5.19affected
LinuxLinux0 < 5.19unaffected
LinuxLinux6.1.142 <= 6.1.*unaffected
LinuxLinux6.6.94 <= 6.6.*unaffected
LinuxLinux6.12.34 <= 6.12.*unaffected
LinuxLinux6.15.3 <= 6.15.*unaffected
LinuxLinux6.16 <= *unaffected

Weaknesses

ADP Enrichment

CVE Program Container

Additional References

References