CVE-2026-54580

Summary

mport is the MidnightBSD Package Manager. Prior to 2.7.8, libmport/util.c did not make every truncated, corrupt, or failed zstd stream fatal in mport_decompress_zstd(), and libmport/fetch.c did not consistently propagate those failures to index-fetch callers. A malicious or faulty mirror could supply compressed package index data that caused ZSTD_decompressStream() or an output write to fail while leaving partial index output available for later use, resulting in package-index integrity loss or denial of service. This issue is fixed in version 2.7.8.

Affected Software

VendorProductVersion RangeStatus
MidnightBSDmport< 2.7.8affected

Weaknesses

  • CWE-354: CWE-354: Improper Validation of Integrity Check Value
  • CWE-755: CWE-755: Improper Handling of Exceptional Conditions

References