CVE-2022-48973
N/A
Summary
In the Linux kernel, the following vulnerability has been resolved:
gpio: amd8111: Fix PCI device reference count leak
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() after the 'out' label. Since pci_dev_put() can handle NULL input parameter, there is no problem for the 'Device not found' branch. For the normal path, add pci_dev_put() in amd_gpio_exit().
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | f942a7de047d8c599cc1a9a26293c8c7400450ea < 4749c5cc147c9860b96db1e71cc36d1de1bd3f59 | affected |
| Linux | Linux | f942a7de047d8c599cc1a9a26293c8c7400450ea < 71d591ef873f9ebb86cd8d053b3caee785b2de6a | affected |
| Linux | Linux | f942a7de047d8c599cc1a9a26293c8c7400450ea < b2bc053ebbba57a06fa655db5ea796de2edce445 | affected |
| Linux | Linux | f942a7de047d8c599cc1a9a26293c8c7400450ea < 48bd5d3801f6b67cc144449d434abbd5043a6d37 | affected |
| Linux | Linux | f942a7de047d8c599cc1a9a26293c8c7400450ea < 5ee6413d3dd972930af787b2c0c7aaeb379fa521 | affected |
| Linux | Linux | f942a7de047d8c599cc1a9a26293c8c7400450ea < 4271515f189bd5fe2ec86b4089dab7cb804625d2 | affected |
| Linux | Linux | f942a7de047d8c599cc1a9a26293c8c7400450ea < e364ce04d8f840478b09eee57b614de7cf1e743e | affected |
| Linux | Linux | f942a7de047d8c599cc1a9a26293c8c7400450ea < 45fecdb9f658d9c82960c98240bc0770ade19aca | affected |
| Linux | Linux | 3.6 | affected |
| Linux | Linux | 0 < 3.6 | unaffected |
| Linux | Linux | 4.9.336 <= 4.9.* | unaffected |
| Linux | Linux | 4.14.302 <= 4.14.* | unaffected |
| Linux | Linux | 4.19.269 <= 4.19.* | unaffected |
| Linux | Linux | 5.4.227 <= 5.4.* | unaffected |
| Linux | Linux | 5.10.159 <= 5.10.* | unaffected |
| Linux | Linux | 5.15.83 <= 5.15.* | unaffected |
| Linux | Linux | 6.0.13 <= 6.0.* | unaffected |
| Linux | Linux | 6.1 <= * | unaffected |
Weaknesses
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: partial
References
- https://git.kernel.org/stable/c/4749c5cc147c9860b96db1e71cc36d1de1bd3f59
- https://git.kernel.org/stable/c/71d591ef873f9ebb86cd8d053b3caee785b2de6a
- https://git.kernel.org/stable/c/b2bc053ebbba57a06fa655db5ea796de2edce445
- https://git.kernel.org/stable/c/48bd5d3801f6b67cc144449d434abbd5043a6d37
- https://git.kernel.org/stable/c/5ee6413d3dd972930af787b2c0c7aaeb379fa521
- https://git.kernel.org/stable/c/4271515f189bd5fe2ec86b4089dab7cb804625d2
- https://git.kernel.org/stable/c/e364ce04d8f840478b09eee57b614de7cf1e743e
- https://git.kernel.org/stable/c/45fecdb9f658d9c82960c98240bc0770ade19aca
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