Out-of-bounds Write Affecting libde265-debuginfo package, versions <0:1.0.18-1.amzn2023.0.2
Threat Intelligence
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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-17887584
- 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-debuginfo 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-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. 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.