Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 89a6079df791aeace2044ea93be1b397195824ec before 10ed7655a17f6a3eaecd1293830488259ccd5723; affected 89a6079df791aeace2044ea93be1b397195824ec before b6eea8b2e858a20ad58ac62dc2de90fea2413f94; affected 89a6079df791aeace2044ea93be1b397195824ec before 17f67414718e6aba123335a33b7d15aa594fff34; affected 89a6079df791aeace2044ea93be1b397195824ec before afca9e19cc720bfafc75dc5ce429c185ca93f31d |
| Linux / Linux | affected 5.0; unaffected 0 before 5.0; unaffected 5.10.158 through 5.10.*; unaffected 5.15.82 through 5.15.*; unaffected 6.0.12 through 6.0.*; unaffected 6.1 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/10ed7655a17f6a3eaecd1293830488259ccd5723
- https://git.kernel.org/stable/c/b6eea8b2e858a20ad58ac62dc2de90fea2413f94
- https://git.kernel.org/stable/c/17f67414718e6aba123335a33b7d15aa594fff34
- https://git.kernel.org/stable/c/afca9e19cc720bfafc75dc5ce429c185ca93f31d
ADP enrichment
No English description supplied.
No references supplied.