# CVE-2022-50615: perf/x86/intel/uncore: Fix reference count leak in snr\_uncore\_mmio\_map()

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2025-12-08 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 5.3

## 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().

## What to do

- Check your stack: if you ship or depend on Linux kernel, no fixed version is listed yet; follow the vendor advisory per the references below.
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## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/d2afced51108813256d8072c6e464b0c9f0bb890
- https://git.kernel.org/stable/c/433bd587dca5c3f7157fef2fe571290cd392cbf6
- https://git.kernel.org/stable/c/a67146437b6428069b71a7e5e740a2a8e1c40ac9
- https://git.kernel.org/stable/c/dc7f07bc1ebb56a23fd1c4f664db5cbeb8900800
- https://git.kernel.org/stable/c/8ebd16c11c346751b3944d708e6c181ed4746c39

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