CVE-2022-50615 perf/x86/intel/uncore: Fix reference count leak in snr_uncore_mmio_map()
A reference count leak in the Linux kernel's Intel uncore performance monitoring driver 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-2022-50615?
CVE-2022-50615 is a memory corruption vulnerability in Linux, published on 8 Dec 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:
perf/x86/intel/uncore: Fix reference count leak in snr_uncore_mmio_map()
pci_get_device() will increase the reference count for the returned pci_dev, so snr_uncore_get_mc_dev() will return a pci_dev with its reference count increased. We need to call pci_dev_put() to decrease the reference count. Let's add the missing pci_dev_put().
Which versions are affected by CVE-2022-50615?
How do I fix CVE-2022-50615?
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-2022-50615 being exploited?
There is no known exploitation of CVE-2022-50615 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2022-50615, GHSA-vw48-v9x9-57g8, UBUNTU-CVE-2022-50615.