What happened
In the Linux kernel, the following vulnerability has been resolved: of: unittest: Fix memory leak in unittest_data_add() In unittest_data_add(), if of_resolve_phandles() fails, the allocated unittest_data is not freed, leading to a memory leak. Fix this by using scope-based cleanup helper __free(kfree) for automatic resource cleanup. This ensures unittest_data is automatically freed when it goes out of scope in error paths. For the success path, use retain_and_null_ptr() to transfer ownership of the memory to the device tree and prevent double freeing.
Affected versions
Linux: 2eb46da2a760e5764c48b752a5ef320e02b96b21 through before 58baf98d1bdab897fd796f39a16061bade229d71 (git); 2eb46da2a760e5764c48b752a5ef320e02b96b21 through before f09b0f705bd7197863b90256ef533a6414d1db2c (git); 2eb46da2a760e5764c48b752a5ef320e02b96b21 through before 235a1eb8d2dcc49a6cf0a5ee1aa85544a5d0054b (git); 3.18 Fixed: See vendor advisory.
Why it matters
Review the vendor advisory and exposure of the affected product to determine operational impact.
Detection & mitigation
- Apply vendor-provided updates or mitigations.
- Review affected product exposure and access logs.
Public PoC references
No public PoC reference has passed the current publication threshold.