CVE-2022-49000
iommu/vt-d: Fix PCI device refcount leak in has_external_pci()
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Fix PCI device refcount leak in has_external_pci() for_each_pci_dev() is implemented by pci_get_device(). The comment of pci_get_device() says that it will increase the reference count for the returned pci_dev and also decrease the reference count for the input pci_dev @from if it is not NULL. If we break for_each_pci_dev() loop with pdev not NULL, we need to call pci_dev_put() to decrease the reference count. Add the missing pci_dev_put() before 'return true' to avoid reference count leak.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Oct 21, 2024 |
| Last Updated | May 11, 2026 |
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Affected Versions
Linux / Linux
89a6079df791aeace2044ea93be1b397195824ec < 10ed7655a17f6a3eaecd1293830488259ccd5723 89a6079df791aeace2044ea93be1b397195824ec < b6eea8b2e858a20ad58ac62dc2de90fea2413f94 89a6079df791aeace2044ea93be1b397195824ec < 17f67414718e6aba123335a33b7d15aa594fff34 89a6079df791aeace2044ea93be1b397195824ec < afca9e19cc720bfafc75dc5ce429c185ca93f31d
Linux / Linux
5.0
References
git.kernel.org: https://git.kernel.org/stable/c/10ed7655a17f6a3eaecd1293830488259ccd5723 git.kernel.org: https://git.kernel.org/stable/c/b6eea8b2e858a20ad58ac62dc2de90fea2413f94 git.kernel.org: https://git.kernel.org/stable/c/17f67414718e6aba123335a33b7d15aa594fff34 git.kernel.org: https://git.kernel.org/stable/c/afca9e19cc720bfafc75dc5ce429c185ca93f31d