CVE-2026-124308

CVSS 5.8 (medium) · published 2026-11-07

Fraunhofer HHI VVdeC before 3.2.1 contains a heap use-after-free vulnerability in DecLibRecon::createSubPicRefBufs because decompressPicture clears m_subPicExtTasks without waiting for pending tasks. Attackers can supply a crafted multi-subpicture VVC bitstream to decoders using two or more threads, causing heap memory corruption or a decoder crash.

Weakness: CWE-416

Source: NVD CVE-2026-124308

References

• https://github.com/fraunhoferhhi/vvdec
• https://github.com/fraunhoferhhi/vvdec/blob/v3.2.0/source/Lib/DecoderLib/DecLibRecon.cpp#L405-L420
• https://github.com/fraunhoferhhi/vvdec/blob/v3.2.0/source/Lib/DecoderLib/DecLibRecon.cpp#L538-L542
• https://github.com/fraunhoferhhi/vvdec/commit/8a0def8ba6050412d33e69a6f1e66e287b039083
• https://github.com/fraunhoferhhi/vvdec/issues/392
• https://github.com/fraunhoferhhi/vvdec/issues/403
• https://www.vulncheck.com/advisories/fraunhofer-hhi-vvdec-before-3.2.1-use-after-free-via-declibrecon-createsubpicrefbufs
• http://www.openwall.com/lists/oss-security/2026/11/10/15
• http://www.openwall.com/lists/oss-security/2026/11/11/29
• https://github.com/fraunhoferhhi/vvdec/issues/392

Check your software

Connect an AI agent to the FixLane MCP server or ask the Telegram bot to check what you have installed against incidents with a verified fixed version.