CVE-2026-112010 PUBLISHED

smpeg through 2.0.0 contains an integer underflow vulnerability in stream_header() in MPEGsystem.cpp that allows attackers to wrap packet_size by declaring an undersized packet length. Attackers can supply a crafted MPEG file opened via SMPEG_new, SMPEG_new_rwops or SMPEG_new_data to trigger a reachable assertion or out-of-bounds copy, crashing the application.

• HaiND from the Post and Telecommunication Institute of Technology finder

• https://hackmd.io/@haindpwn/smpeg-system-header-stream-table-oob-read
• https://github.com/icculus/smpeg/blob/d188dc111f4817288718705e4a84e248803ccfdc/MPEGsystem.cpp#L295-L350
• https://github.com/icculus/smpeg/blob/d188dc111f4817288718705e4a84e248803ccfdc/MPEGsystem.cpp#L777
• https://github.com/icculus/smpeg
• VulnCheck Advisory: smpeg through 2.0.0 Integer Underflow via stream_header in MPEGsystem.cpp

• Integer Underflow (Wrap or Wraparound) CWE