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Missing Release of Memory after Effective Lifetime


Severity High
Score 7.5/10


A vulnerability, which was classified as problematic, has been found in OpenCV wechat_qrcode Module versions prior to 4.8.0. Affected by this issue is the function "DecodedBitStreamParser::decodeHanziSegment" of the file "qrcode/decoder/decoded_bit_stream_parser.cpp". The manipulation leads to memory leak. The attack may be launched remotely.

  • LOW
  • NONE
  • NONE
  • NONE
  • NONE
  • HIGH

CWE-401 - Missing release of memory after effective lifetime (memory leak)

'Missing release of memory after effective lifetime (memory leak)' is a weakness that occurs when software doesn't effectively release allocated memory after it is used. If not addressed, this enables attackers to launch denial of service attacks (by crashing or hanging the program) or take advantage of other unexpected behavior resulting from low memory conditions.

Advisory Timeline

  • Published