VVdeC NULL Pointer Dereference via InterPrediction::xPredInterBlk
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Passive
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-476.
Summary
Fraunhofer HHI VVdeC through 3.2.1 contains a NULL pointer dereference (CWE-476) in InterPrediction::xPredInterBlk. An attacker can supply a crafted VVC bitstream that activates a new SPS with sps_ref_wraparound_enabled_flag set. The decoder then reads from missing PIC_RECON_WRAP buffers and crashes, causing denial of service. The CVSS 4.0 base score is 6.8 (MEDIUM), with local attack vector and user interaction required.
Written with Claude Haiku 5.5 from the sources below · 2026-11-07
Description from the CNA
Fraunhofer HHI VVdeC through 3.2.1 contains a NULL pointer dereference vulnerability in InterPrediction::xPredInterBlk that allows attackers to crash the decoder by switching SPS to enable reference wrap-around. Attackers can supply a crafted VVC bitstream activating a new SPS with sps_ref_wraparound_enabled_flag set, causing reads from missing PIC_RECON_WRAP buffers and denial of service.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| fraunhoferhhi | vvdec | up to 3.2.1 | — | No fix listed | CNA |
- vvdec Vendorfraunhoferhhi Affected up to 3.2.1 Fixed in — No fix listed CNA
Remediation
No fixed version is listed for VVdeC. Until a fix is available, avoid decoding untrusted VVC bitstreams with VVdeC and watch the Fraunhofer HHI project for a release that addresses this issue.
Written with Claude Haiku 5.5 from the sources below · 2026-11-07
Timeline
- 2026-11-07 Threatist record created from CVE-2026-124311
- 2026-11-07 Alias added: GHSA-8xcr-xgj2-cmf5
References
Sources
- CVE-2026-124311 · CVE Program
- CVE-2026-124311 · NVD
- GHSA-8xcr-xgj2-cmf5 · GitHub Advisory Database · CC BY 4.0
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