linux — security advisory
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.
- Products
- linux
- Affected versions
- Not specified
- Fixed versions
- 6.1.4-1
- CVEs
- CVE-2022-50576
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 30 Oct 2026, 14:21 UTC · Revision 1
Source evidence
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.
osv:DEBIAN-CVE-2022-50576
linux
Fixed versions: 6.1.4-1
linux
Fixed versions: 6.1.4-1
linux
Fixed versions: 6.1.4-1
Complete source record
{
"id": "373c20237ab244b40e63f8d7a8163de490d1ac6dfa0413964a49b675450a0192",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2022-50576",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2022-50576",
"summary": "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.",
"evidence": "osv:DEBIAN-CVE-2022-50576",
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],
"modified": "2026-10-15T07:47:26.596731379Z",
"provider": "osv",
"upstream": [
"CVE-2022-50576"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2022-50576"
]
},
"related_cves": [
{
"value": "CVE-2022-50576",
"evidence": "/upstream"
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],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 322143,
"published_at": "2025-10-22T14:15:42.56+00:00"
}