Monitor vulnerabilities like this one.
Sign up free to get alerted when software you use is affected.
7.8
CVE-2025-38313: Linux kernel fix: Double-free error when freeing MC device
CVE-2025-38313
Summary
A fix has been made to prevent a double-free error in the Linux kernel's bus driver for Freescale MC devices. This error occurred when a device was freed prematurely, which could potentially cause system instability. The fix ensures that only the device's associated bus is freed when it's supposed to be, preventing data corruption and crashes.
What to do
No fix is available yet. Check with your software vendor for updates.
Affected software
| Vendor | Product | Affected versions |
|---|---|---|
| linux | linux_kernel |
>= 4.13, < 5.4.295 >= 5.5, < 5.10.239 >= 5.11, < 5.15.186 >= 5.16, < 6.1.142 >= 6.2, < 6.6.94 >= 6.7, < 6.12.34 >= 6.13, < 6.15.3 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| debian | debian_linux |
11.0 cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* |
Original title
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, ...
Original description
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);
nvd CVSS3.1
7.8
Vulnerability type
CWE-415
- https://git.kernel.org/stable/c/12e4431e5078847791936820bd39df9e1ee26d2e Patch
- https://git.kernel.org/stable/c/1d5baab39e5b09a76870b345cdee7933871b881f Patch
- https://git.kernel.org/stable/c/3135e03a92f6b5259d0a7f25f728e9e7866ede3f Patch
- https://git.kernel.org/stable/c/4b23c46eb2d88924b93aca647bde9a4b9cf62cf9 Patch
- https://git.kernel.org/stable/c/7002b954c4a8b9965ba0f139812ee4a6f71beac8 Patch
- https://git.kernel.org/stable/c/873d47114fd5e5a1cad2018843671537cc71ac84 Patch
- https://git.kernel.org/stable/c/b2057374f326303c86d8423415ab58656eebc695 Patch
- https://git.kernel.org/stable/c/d694bf8a9acdbd061596f3e7549bc8cb70750a60 Patch
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html Third Party Advisory
Published: 10 Jul 2025 · Updated: 15 Jun 2026 · First seen: 7 Mar 2026