CVE-2022-49002
iommu/vt-d: Fix PCI device refcount leak in dmar_dev_scope_init()
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 dmar_dev_scope_init() 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() for the error path 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
2e45528930388658603ea24d49cf52867b928d3e < d47bc9d7bcdbb9adc9703513d964b514fee5b0bf 2e45528930388658603ea24d49cf52867b928d3e < 71c4a621985fc051ab86d3a86c749069a993fcb2 2e45528930388658603ea24d49cf52867b928d3e < 876d7bfb89273997056220029ff12b1c2cc4691d 2e45528930388658603ea24d49cf52867b928d3e < cbdd83bd2fd67142b03ce9dbdd1eab322ff7321f 2e45528930388658603ea24d49cf52867b928d3e < a5c65cd56aed027f8a97fda8b691caaeb66d115e 2e45528930388658603ea24d49cf52867b928d3e < bdb613ef179ad4bb9d56a2533e9b30e434f1dfb7 2e45528930388658603ea24d49cf52867b928d3e < 2a8f7b90681472948de172dbbf5a54cd342870aa 2e45528930388658603ea24d49cf52867b928d3e < 4bedbbd782ebbe7287231fea862c158d4f08a9e3
Linux / Linux
3.15
References
git.kernel.org: https://git.kernel.org/stable/c/d47bc9d7bcdbb9adc9703513d964b514fee5b0bf git.kernel.org: https://git.kernel.org/stable/c/71c4a621985fc051ab86d3a86c749069a993fcb2 git.kernel.org: https://git.kernel.org/stable/c/876d7bfb89273997056220029ff12b1c2cc4691d git.kernel.org: https://git.kernel.org/stable/c/cbdd83bd2fd67142b03ce9dbdd1eab322ff7321f git.kernel.org: https://git.kernel.org/stable/c/a5c65cd56aed027f8a97fda8b691caaeb66d115e git.kernel.org: https://git.kernel.org/stable/c/bdb613ef179ad4bb9d56a2533e9b30e434f1dfb7 git.kernel.org: https://git.kernel.org/stable/c/2a8f7b90681472948de172dbbf5a54cd342870aa git.kernel.org: https://git.kernel.org/stable/c/4bedbbd782ebbe7287231fea862c158d4f08a9e3