CVE-2021-22556

Summary

The Security Team discovered an integer overflow bug that allows an attacker with code execution to issue memory cache invalidation operations on pages that they don’t own, allowing them to control kernel memory from userspace. We recommend upgrading to kernel version 4.1 or beyond.

Affected Software

VendorProductVersion RangeStatus
Google LLCFuchsia Kernelunspecified < 4.1affected

Weaknesses

  • CWE-190: CWE-190 Integer Overflow or Wraparound

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

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

References