What’s Vulnerable › Vulnerabilities

CVE-2022-50615: perf/x86/intel/uncore: Fix reference count leak in snr_uncore_mmio_map()

• Severity: unknown
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-12-08 · updated 2026-06-17

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().

Affected products

• Linux kernel: 5.3 — fixed in 6.2

How to fix

Upgrade to a fixed version: Linux kernel 6.2. Check the vendor advisory for mitigations.

References

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

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