CVE-2020-36778

Summary

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

i2c: xiic: fix reference leak when pm_runtime_get_sync fails

The PM reference count is not expected to be incremented on return in xiic_xfer and xiic_i2c_remove.

However, pm_runtime_get_sync will increment the PM reference count even failed. Forgetting to putting operation will result in a reference leak here.

Replace it with pm_runtime_resume_and_get to keep usage counter balanced.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux10b17004a74c384c6f410af355b0d6d7a168f613 < c977426db644ba476938125597947979e8aba725affected
LinuxLinux10b17004a74c384c6f410af355b0d6d7a168f613 < e2ba996577eaea423694dc69ae43d56f1410a22baffected
LinuxLinux10b17004a74c384c6f410af355b0d6d7a168f613 < a42ac16e6573f19c78f556ea292f5b534fcc4514affected
LinuxLinux10b17004a74c384c6f410af355b0d6d7a168f613 < a85c5c7a3aa8041777ff691400b4046e56149fd3affected
LinuxLinux5.6affected
LinuxLinux0 < 5.6unaffected
LinuxLinux5.10.37 <= 5.10.*unaffected
LinuxLinux5.11.21 <= 5.11.*unaffected
LinuxLinux5.12.4 <= 5.12.*unaffected
LinuxLinux5.13 <= *unaffected

Weaknesses

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References