CVE-2022-50170 kunit: executor: Fix a memory leak on failure in kunit_filter_tests
A memory leak in the Linux kernel's KUnit executor can lead to resource exhaustion and denial of service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2022-50170?
CVE-2022-50170 is a medium-severity memory corruption vulnerability in Linux kernel, published on 18 Jun 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
kunit: executor: Fix a memory leak on failure in kunit_filter_tests
It's possible that memory allocation for 'filtered' will fail, but for the copy of the suite to succeed. In this case, the copy could be leaked.
Properly free 'copy' in the error case for the allocation of 'filtered' failing.
Note that there may also have been a similar issue in kunit_filter_subsuites, before it was removed in "kunit: flatten kunit_suite*** to kunit_suite** in .kunit_test_suites".
This was reported by clang-analyzer via the kernel test robot, here: https://lore.kernel.org/all/[email protected]/
And by smatch via Dan Carpenter and the kernel test robot: https://lore.kernel.org/all/[email protected]/
Weakness: CWE-401
Which versions are affected by CVE-2022-50170?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2022-50170?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2022-50170 being exploited?
There is no known exploitation of CVE-2022-50170 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2022-50170, GHSA-729q-4w2j-59v3, UBUNTU-CVE-2022-50170.