CVE-2026-45383

libde265 is an open source implementation of the h.265 video codec. Versions prior to 1.0.19 have a heap buffer overflow (out-of-bounds READ) exists in `decoder_context::decode_slice_unit_WPP()` in `libde265/decctx.cc`. When decoding a WPP (Wavefront Parallel Processing) HEVC slice, `ctbAddrRS` is computed as `ctbRow * ctbsWidth` inside the entry-point loop. If the PPS/SPS headers are crafted so that this value exceeds `pps.CtbAddrRStoTS.size()`, the subsequent array access `pps.CtbAddrRStoTS[ctbAddrRS]` reads past the end of the allocated vector, triggering a heap-buffer-overflow confirmed by AddressSanitizer. Version 1.0.19 patches the issue.

CVSS

No CVSS.

References

Link	Resource
https://github.com/strukturag/libde265/security/advisories/GHSA-wg9q-ppqw-6q38

Configurations

No configuration.

History

No history.

Information

Published : 2026-07-21 21:16

Updated : 2026-07-23 18:18

NVD link : CVE-2026-45383

Mitre link : CVE-2026-45383

CVE.ORG link : CVE-2026-45383

JSON object : View

Products Affected

No product.

CWE

CWE-125

Out-of-bounds Read

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