NULL Pointer Dereference in Fraunhofer HHI VVdeC Product
CVE-2026-124311

6.8MEDIUM

Key Information:

Vendor

Fraunhoferhhi

Status
Vvdec
Vendor
CVE Published:
7 November 2026

What is CVE-2026-124311?

A NULL pointer dereference vulnerability exists in the InterPrediction::xPredInterBlk component of the VVdeC library, affecting versions up to 3.2.1. This issue allows attackers to induce a crash of the decoder by manipulating the Sequence Parameter Set (SPS) to enable reference wrap-around. Through this crafted VVC bitstream, an attacker can set the sps_ref_wraparound_enabled_flag, triggering erroneous reads from nonexistent PIC_RECON_WRAP buffers and resulting in a denial of service condition.

Affected Version(s)

vvdec 0 <= 3.2.1

References

https://github.com/fraunhoferhhi/vvdec/issues/420
issue-tracking
https://github.com/fraunhoferhhi/vvdec/commit/fb73aca37b4...
patch
https://github.com/fraunhoferhhi/vvdec/blob/v3.2.1/source...
technical-description

CVSS V4

Score:
6.8
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Alexander A. Shvedov (sigdevel)
.