Not yet scoredPublished Oct 22, 2025

CVE-2022-50576serial: pch: Fix PCI device refcount leak in pch_request_dma()

Updated under an hour ago (Oct 27, 2026, 7:00 AM ET)

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Exploited in the last 30 days

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.

CVSS: Not yet scored
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Deferred
Record last updated: May 11, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 3c6a483275f47a2ef7119309ad3d791c10cf30da before 90ff030ca10b69feeebda1427550ebf9ed2ad868; from 3c6a483275f47a2ef7119309ad3d791c10cf30da before 56e5a7c5ee3f0dc8978b5df2b1a98a1b060c5e2a; from 3c6a483275f47a2ef7119309ad3d791c10cf30da before dfd15c5550b9190d5b0f9bcacb3e6436322f3854; from 3c6a483275f47a2ef7119309ad3d791c10cf30da before d165388227aa7e46a9751b90bae6337b5335cdbb; from 3c6a483275f47a2ef7119309ad3d791c10cf30da before 07f4ca68b0f6bf84b6b391c14b59fd179fcde9c5; from 3c6a483275f47a2ef7119309ad3d791c10cf30da before 6f7d82380fbeaed3a940efc33c23f0c4bbd0fc02; from 3c6a483275f47a2ef7119309ad3d791c10cf30da before 4f5d28865c665c9064de631a518f9bc8099d9ce4; from 3c6a483275f47a2ef7119309ad3d791c10cf30da before 516614a371c26e3334625b4bca19a5362bf658d6; and 1 more ranges	CNA record

References

References

https://git.kernel.org/stable/c/90ff030ca10b69feeebda1427550ebf9ed2ad868
https://git.kernel.org/stable/c/56e5a7c5ee3f0dc8978b5df2b1a98a1b060c5e2a
https://git.kernel.org/stable/c/dfd15c5550b9190d5b0f9bcacb3e6436322f3854
https://git.kernel.org/stable/c/d165388227aa7e46a9751b90bae6337b5335cdbb
https://git.kernel.org/stable/c/07f4ca68b0f6bf84b6b391c14b59fd179fcde9c5
https://git.kernel.org/stable/c/6f7d82380fbeaed3a940efc33c23f0c4bbd0fc02
https://git.kernel.org/stable/c/4f5d28865c665c9064de631a518f9bc8099d9ce4
https://git.kernel.org/stable/c/516614a371c26e3334625b4bca19a5362bf658d6
https://git.kernel.org/stable/c/8be3a7bf773700534a6e8f87f6ed2ed111254be5

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.