In the Linux kernel, the following vulnerability has been resolved: serial: pch: Fix PCI device refcount leak in pch_request_dma() As comment of pci_get_slot() says, it returns a pci_device with its refcount increased. The caller must decrement the reference count by calling pci_dev_put(). Since 'dma_dev' is only used to filter the channel in filter(), we can call pci_dev_put() before exiting from pch_request_dma(). Add the missing pci_dev_put() for the normal and error path.

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

Vendors Products
Linux
  • Linux Kernel

No data.

No data.

References
Link Providers
https://git.kernel.org/stable/c/07f4ca68b0f6bf84b6b391c14b59fd179fcde9c5 cve-icon cve-icon
https://git.kernel.org/stable/c/4f5d28865c665c9064de631a518f9bc8099d9ce4 cve-icon cve-icon
https://git.kernel.org/stable/c/516614a371c26e3334625b4bca19a5362bf658d6 cve-icon cve-icon
https://git.kernel.org/stable/c/56e5a7c5ee3f0dc8978b5df2b1a98a1b060c5e2a cve-icon cve-icon
https://git.kernel.org/stable/c/6f7d82380fbeaed3a940efc33c23f0c4bbd0fc02 cve-icon cve-icon
https://git.kernel.org/stable/c/8be3a7bf773700534a6e8f87f6ed2ed111254be5 cve-icon cve-icon
https://git.kernel.org/stable/c/90ff030ca10b69feeebda1427550ebf9ed2ad868 cve-icon cve-icon
https://git.kernel.org/stable/c/d165388227aa7e46a9751b90bae6337b5335cdbb cve-icon cve-icon
https://git.kernel.org/stable/c/dfd15c5550b9190d5b0f9bcacb3e6436322f3854 cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2025102209-CVE-2022-50576-98f3@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2022-50576 cve-icon
https://www.cve.org/CVERecord?id=CVE-2022-50576 cve-icon
History

Thu, 23 Oct 2025 10:30:00 +0000

Type Values Removed Values Added
First Time appeared Linux
Linux linux Kernel
Vendors & Products Linux
Linux linux Kernel

Thu, 23 Oct 2025 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Moderate

Wed, 22 Oct 2025 13:45:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: serial: pch: Fix PCI device refcount leak in pch_request_dma() As comment of pci_get_slot() says, it returns a pci_device with its refcount increased. The caller must decrement the reference count by calling pci_dev_put(). Since 'dma_dev' is only used to filter the channel in filter(), we can call pci_dev_put() before exiting from pch_request_dma(). Add the missing pci_dev_put() for the normal and error path.
Title serial: pch: Fix PCI device refcount leak in pch_request_dma()
References
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2025-10-22T13:23:30.250Z

Updated: 2025-10-22T13:23:30.250Z

Reserved: 2025-10-22T13:20:23.761Z

Link: CVE-2022-50576

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-10-22T14:15:42.560

Modified: 2025-10-22T21:12:48.953

Link: CVE-2022-50576

cve-icon Redhat

Severity : Moderate

Publid Date: 2025-10-22T00:00:00Z

Links: CVE-2022-50576 - Bugzilla