Vulnerability Description
libde265 is an open source implementation of the h.265 video codec. Prior to version 1.0.20, a crafted H.265 bitstream can cause an out-of-bounds array write in `decoder_context::process_reference_picture_set()` (`libde265/decctx.cc:1376`). The root cause is a missing aggregate bound check on predicted short-term reference picture set entries. Individual list sizes are validated, but the combined count after predicted RPS construction can exceed the 16-entry `PocStFoll` array, writing at index 16. Version 1.0.20 patches the issue.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Struktur | Libde265 | < 1.0.20 |
Related Weaknesses (CWE)
References
- https://github.com/strukturag/libde265/commit/691f3a3c55b3d32478c4a49895dee061a2Patch
- https://github.com/strukturag/libde265/security/advisories/GHSA-g2rg-wj66-w594ExploitMitigationVendor Advisory
- https://github.com/strukturag/libde265/security/advisories/GHSA-g2rg-wj66-w594ExploitMitigationVendor Advisory
FAQ
What is CVE-2026-49295?
CVE-2026-49295 is a vulnerability with a CVSS score of 7.1 (HIGH). libde265 is an open source implementation of the h.265 video codec. Prior to version 1.0.20, a crafted H.265 bitstream can cause an out-of-bounds array write in `decoder_context::process_reference_pic...
How severe is CVE-2026-49295?
CVE-2026-49295 has been rated HIGH with a CVSS base score of 7.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-49295?
Check the references section above for vendor advisories and patch information. Affected products include: Struktur Libde265.