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Heap-based Buffer Overflow

CVE-2025-6818

Low
1.9/10

Summary

A vulnerability, which was classified as problematic, was found in HDF5. Affected is the function "H5O__chunk_protect" of the "file /src/H5Ochunk.c". The manipulation leads to Heap-based Buffer Overflow. An attack has to be approached locally. The exploit has been disclosed to the public and may be used.

  • LOW
  • LOCAL
  • HIGH
  • UNCHANGED
  • NONE
  • LOW
  • HIGH
  • HIGH

CWE-122 - Heap-based Buffer Overflow

A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

References

Advisory Timeline

  • Published