Out-of-bounds Read Affecting libde265-debuginfo package, versions <0:1.0.18-1.amzn2023.0.3
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-AMZN2023-LIBDE265DEBUGINFO-18065105
- published21 Jul 2026
- disclosed21 Jul 2026
Introduced: 21 Jul 2026
NewCVE-2026-45383 (opens in a new tab)How to fix?
Upgrade Amazon-Linux:2023 libde265-debuginfo to version 0:1.0.18-1.amzn2023.0.3 or higher.
This issue was patched in ALAS2023-2026-1974.
NVD Description
Note: Versions mentioned in the description apply only to the upstream libde265-debuginfo package and not the libde265-debuginfo package as distributed by Amazon-Linux.
See How to fix? for Amazon-Linux:2023 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.