CVE-2022-50520

Summary

In the Linux kernel, the following vulnerability has been resolved:

drm/radeon: Fix PCI device refcount leak in radeon_atrm_get_bios()

As comment of pci_get_class() says, it returns a pci_device with its refcount increased and decreased the refcount for the input parameter @from if it is not NULL.

If we break the loop in radeon_atrm_get_bios() with 'pdev' not NULL, we need to call pci_dev_put() to decrease the refcount. Add the missing pci_dev_put() to avoid refcount leak.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxc61e2775873f603148e8e998a938721b7d222d24 < 6f28c7f67af4ef9bca580ab67ae2d4511797af56affected
LinuxLinuxc61e2775873f603148e8e998a938721b7d222d24 < e738f82e5b1311e8fb3d1409491a6fcce6418fbeaffected
LinuxLinuxc61e2775873f603148e8e998a938721b7d222d24 < 1079df6acf56f99d86b0081a38c84701412cc90eaffected
LinuxLinuxc61e2775873f603148e8e998a938721b7d222d24 < 470a77989037c3ab2b08bf2d026d2c0ddc35ff5baffected
LinuxLinuxc61e2775873f603148e8e998a938721b7d222d24 < 3991d98a8a07b71c02f3a39f77d6d9a7f575a5c4affected
LinuxLinuxc61e2775873f603148e8e998a938721b7d222d24 < 88c6e0995c04b170563b5c894c50a3b2152e18c2affected
LinuxLinuxc61e2775873f603148e8e998a938721b7d222d24 < b9decada8749b606fd8b4f04a3d6c74f7983d7bcaffected
LinuxLinuxc61e2775873f603148e8e998a938721b7d222d24 < a6cffe54064a5f6c2162a85af3c16c6b453eac4eaffected
LinuxLinuxc61e2775873f603148e8e998a938721b7d222d24 < 725a521a18734f65de05b8d353b5bd0d3ca4c37aaffected
LinuxLinux61ebf0a926149cc161131470cf848cb70b3d6fe6affected
LinuxLinux0a1d9a860832a5ca43114cdebf0e8650463cc1f0affected
LinuxLinux5f54f145719f453dccc73304cd427096bf7b806caffected
LinuxLinux063ab9cb6308a0806d623c8d6dda5cb2b3b87fceaffected
LinuxLinux3.2.29 < 3.3affected
LinuxLinux3.4.12 < 3.5affected
LinuxLinux3.5.5 < 3.6affected
LinuxLinux3.2.60 < 3.3affected
LinuxLinux3.6affected
LinuxLinux0 < 3.6unaffected
LinuxLinux4.9.337 <= 4.9.*unaffected
LinuxLinux4.14.303 <= 4.14.*unaffected
LinuxLinux4.19.270 <= 4.19.*unaffected
LinuxLinux5.4.229 <= 5.4.*unaffected
LinuxLinux5.10.163 <= 5.10.*unaffected
LinuxLinux5.15.86 <= 5.15.*unaffected
LinuxLinux6.0.16 <= 6.0.*unaffected
LinuxLinux6.1.2 <= 6.1.*unaffected
LinuxLinux6.2 <= *unaffected

Weaknesses

References