CVE-2021-46917

Summary

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

dmaengine: idxd: fix wq cleanup of WQCFG registers

A pre-release silicon erratum workaround where wq reset does not clear WQCFG registers was leaked into upstream code. Use wq reset command instead of blasting the MMIO region. This also address an issue where we clobber registers in future devices.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxda32b28c95a79e399e18c03f8178f41aec9c66e4 < e5eb9757fe4c2392e069246ae78badc573af1833affected
LinuxLinuxda32b28c95a79e399e18c03f8178f41aec9c66e4 < f7dc8f5619165e1fa3383d0c2519f502d9e2a1a9affected
LinuxLinuxda32b28c95a79e399e18c03f8178f41aec9c66e4 < ea9aadc06a9f10ad20a90edc0a484f1147d88a7aaffected
LinuxLinux2a2df2bd10de44c3804661ed15157817c12d6291affected
LinuxLinux5.7.10 < 5.8affected
LinuxLinux5.8affected
LinuxLinux0 < 5.8unaffected
LinuxLinux5.10.32 <= 5.10.*unaffected
LinuxLinux5.11.16 <= 5.11.*unaffected
LinuxLinux5.12 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

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

CVE Program Container

Additional References

References