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 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);
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);
Vendor
Product
CWE
Yayın Tarihi
2025-07-10 08:15:30
Güncelleme
2025-12-19 16:44:23
Source Identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
KEV Date Added
-
Kategoriler
Referanslar
https://git.kernel.org/stable/c/12e4431e5078847791936820bd39df9e1ee26d2e
https://git.kernel.org/stable/c/1d5baab39e5b09a76870b345cdee7933871b881f
https://git.kernel.org/stable/c/3135e03a92f6b5259d0a7f25f728e9e7866ede3f
https://git.kernel.org/stable/c/4b23c46eb2d88924b93aca647bde9a4b9cf62cf9
https://git.kernel.org/stable/c/7002b954c4a8b9965ba0f139812ee4a6f71beac8
https://git.kernel.org/stable/c/873d47114fd5e5a1cad2018843671537cc71ac84
https://git.kernel.org/stable/c/b2057374f326303c86d8423415ab58656eebc695
https://git.kernel.org/stable/c/d694bf8a9acdbd061596f3e7549bc8cb70750a60
https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html