CVE-2021-47286

Summary

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

bus: mhi: core: Validate channel ID when processing command completions

MHI reads the channel ID from the event ring element sent by the device which can be any value between 0 and 255. In order to prevent any out of bound accesses, add a check against the maximum number of channels supported by the controller and those channels not configured yet so as to skip processing of that event ring element.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux1d3173a3bae7039b765a0956e3e4bf846dbaacb8 < 3efec3b4b16fc7af25676a94230a8ab2a3bb867caffected
LinuxLinux1d3173a3bae7039b765a0956e3e4bf846dbaacb8 < aed4f5b51aba41e2afd7cfda20a0571a6a67dfe9affected
LinuxLinux1d3173a3bae7039b765a0956e3e4bf846dbaacb8 < 546362a9ef2ef40b57c6605f14e88ced507f8dd0affected
LinuxLinux5.7affected
LinuxLinux0 < 5.7unaffected
LinuxLinux5.10.54 <= 5.10.*unaffected
LinuxLinux5.13.6 <= 5.13.*unaffected
LinuxLinux5.14 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

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

CVE Program Container

Additional References

References