In the Linux kernel, the following vulnerability has been resolved: platform/x86/amd: pmf: Use device managed allocations If setting up smart PC fails for any reason then this can lead to a double free when unloading amd-pmf. This is because dev->buf was freed but never set to NULL and is again freed in amd_pmf_remove(). To avoid subtle allocation bugs in failures leading to a double free change all allocations into device managed allocations.
https://git.kernel.org/stable/c/d9db3a941270d92bbd1a6a6b54a10324484f2f2d
https://git.kernel.org/stable/c/0d10b532f861253c283863522d59d099fcb0796d