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high7.8

CVE-2025-38313

In the Linux kernel, the following vulnerability has been resolved: bus: fsl-mc: fix double-free on mc_dev The blamed commit tried to simplify how the dealloca…

Impact

In the Linux kernel, the following vulnerability has been resolved: bus: fsl-mc: fix double-free on mc_dev The blamed commit tried to simplify how the deallocations are done but, in the process, introduced a double-free on the mc_dev variable. In case the MC device is a DPRC, a new mc_bus is allocated and the mc_dev variable is just a reference to one of its fields. In this circumstance, on the error path only the mc_bus should be freed. This commit introduces back the following checkpatch warning which is a false-positive. WARNING: kfree(NULL) is safe and this check is probably not required + if (mc_bus) + kfree(mc_bus);

Affected products

VendorProductAffected versions
LinuxLinux Kernel
from 4.13 before 5.4.295
from 5.5 before 5.10.239
from 5.11 before 5.15.186
from 5.16 before 6.1.142
from 6.2 before 6.6.94
from 6.7 before 6.12.34
DebianDebian Linux
Version 11.0

Weakness classification

CWE-415

References