Out-of-bounds Write Affecting libde265-debugsource package, versions <0:1.0.18-1.amzn2023.0.2
Threat Intelligence
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Test your applications- Snyk IDSNYK-AMZN2023-LIBDE265DEBUGSOURCE-17887592
- published8 Jul 2026
- disclosed19 Jun 2026
Introduced: 19 Jun 2026
CVE-2026-49295 (opens in a new tab)How to fix?
Upgrade Amazon-Linux:2023 libde265-debugsource to version 0:1.0.18-1.amzn2023.0.2 or higher.
This issue was patched in ALAS2023-2026-1918.
NVD Description
Note: Versions mentioned in the description apply only to the upstream libde265-debugsource package and not the libde265-debugsource 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. 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.