In the Linux kernel, the following vulnerability has been resolved:
cdx: Fix double free when sysfs file creation fails
In cdx_create_res_attr(), if sysfs_create_bin_file() fails, the code
frees res_attr but doesn't set cdx_dev->res_attr[num] to NULL. This
leaves a dangling pointer in the array. Then cdx_destroy_res_attr()
frees the already-freed memory.
Fix the double free by initializing
cdx_dev->res_attr[num] after sysfs_create_bin_file() completes.
Ссылки 4
https://git.kernel.org/stable/c/4cd24873ab9fdbd730604881a6e8087bc7b99336
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/6f4acc3a3c300e174e3f586b97b04ed8f5948c36
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/7e9451bf0bdba6daee1eaf4e7566612af6ca1c32
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/88f4cd42a04bdadd189d7f667a4c279f4e962ca6
416baaa9-dc9f-4396-8d5f-8c081fb06d67