CVE-2025-38313

Summary

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 Software

VendorProductVersion RangeStatus
LinuxLinuxa042fbed02904493ae6df26ec836045f5a7d3ce2 < 12e4431e5078847791936820bd39df9e1ee26d2eaffected
LinuxLinuxa042fbed02904493ae6df26ec836045f5a7d3ce2 < 3135e03a92f6b5259d0a7f25f728e9e7866ede3faffected
LinuxLinuxa042fbed02904493ae6df26ec836045f5a7d3ce2 < 7002b954c4a8b9965ba0f139812ee4a6f71beac8affected
LinuxLinuxa042fbed02904493ae6df26ec836045f5a7d3ce2 < b2057374f326303c86d8423415ab58656eebc695affected
LinuxLinuxa042fbed02904493ae6df26ec836045f5a7d3ce2 < 4b23c46eb2d88924b93aca647bde9a4b9cf62cf9affected
LinuxLinuxa042fbed02904493ae6df26ec836045f5a7d3ce2 < 1d5baab39e5b09a76870b345cdee7933871b881faffected
LinuxLinuxa042fbed02904493ae6df26ec836045f5a7d3ce2 < 873d47114fd5e5a1cad2018843671537cc71ac84affected
LinuxLinuxa042fbed02904493ae6df26ec836045f5a7d3ce2 < d694bf8a9acdbd061596f3e7549bc8cb70750a60affected
LinuxLinux4.13affected
LinuxLinux0 < 4.13unaffected
LinuxLinux5.4.295 <= 5.4.*unaffected
LinuxLinux5.10.239 <= 5.10.*unaffected
LinuxLinux5.15.186 <= 5.15.*unaffected
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