CVE-2021-38578

Summary

Existing CommBuffer checks in SmmEntryPoint will not catch underflow when computing BufferSize.

Affected Software

Weaknesses

• CWE-124: A case of CWE-124 is occurring in PiSmmCore.

ADP Enrichment

CVE Program Container

Additional References

• https://bugzilla.tianocore.org/show_bug.cgi?id=3387
• https://www.insyde.com/security-pledge/SA-2023024
• https://lists.debian.org/debian-lts-announce/2025/06/msg00007.html

CISA ADP Vulnrichment

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

References

• https://bugzilla.tianocore.org/show_bug.cgi?id=3387
• https://www.insyde.com/security-pledge/SA-2023024

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