gpio: amd8111: Fix PCI device reference count leak
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: no
- Technical impact: partial
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().
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- Linux Linux
Version range not reported
- Linux Linux
3.6
References 8
git.kernel.org
- stable/c/4749c5cc147c9860b96db1e71cc36d1de1bd3f59
- stable/c/71d591ef873f9ebb86cd8d053b3caee785b2de6a
- stable/c/b2bc053ebbba57a06fa655db5ea796de2edce445
- stable/c/48bd5d3801f6b67cc144449d434abbd5043a6d37
- stable/c/5ee6413d3dd972930af787b2c0c7aaeb379fa521
- stable/c/4271515f189bd5fe2ec86b4089dab7cb804625d2
- stable/c/e364ce04d8f840478b09eee57b614de7cf1e743e
- stable/c/45fecdb9f658d9c82960c98240bc0770ade19aca