Description
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.
Metrics
CVSS 3.1 5.5/10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HAffected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 89a6079df791aeace2044ea93be1b397195824ec, < 10ed7655a17f6a3eaecd1293830488259ccd5723; >= 89a6079df791aeace2044ea93be1b397195824ec, < b6eea8b2e858a20ad58ac62dc2de90fea2413f94; >= 89a6079df791aeace2044ea93be1b397195824ec, < 17f67414718e6aba123335a33b7d15aa594fff34; >= 89a6079df791aeace2044ea93be1b397195824ec, < afca9e19cc720bfafc75dc5ce429c185ca93f31d |
| Linux | Linux | 5.0 |
References
- https://git.kernel.org/stable/c/10ed7655a17f6a3eaecd1293830488259ccd5723Patch
- https://git.kernel.org/stable/c/17f67414718e6aba123335a33b7d15aa594fff34Patch
- https://git.kernel.org/stable/c/afca9e19cc720bfafc75dc5ce429c185ca93f31dPatch
- https://git.kernel.org/stable/c/b6eea8b2e858a20ad58ac62dc2de90fea2413f94Patch
Timeline
- Published
- Oct 21, 2024
- Last modified
- Jun 17, 2026
- NVD status
- Analyzed