Out-of-bounds Read Affecting libde265 package, versions <1.0.2-2ubuntu0.18.04.1~esm6
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UBUNTU1804-LIBDE265-17765881
- published18 Jul 2026
- disclosed21 Jul 2026
Introduced: 18 Jul 2026
CVE-2026-45383 (opens in a new tab)How to fix?
Upgrade Ubuntu:18.04 libde265 to version 1.0.2-2ubuntu0.18.04.1~esm6 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream libde265 package and not the libde265 package as distributed by Ubuntu.
See How to fix? for Ubuntu:18.04 relevant fixed versions and status.
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.