CVE-2025-38113
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 ]
| Software | From | Fixed in |
|---|---|---|
| linux / linux_kernel | 5.19 | 6.1.142 |
| linux / linux_kernel | 6.2 | 6.6.94 |
| linux / linux_kernel | 6.7 | 6.12.34 |
| linux / linux_kernel | 6.13 | 6.15.3 |
| linux / linux_kernel | 6.16-rc1 | 6.16-rc1.x |
| debian / debian_linux | 11.0 | 11.0.x |
- 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
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