Heap-based Buffer Overflow Affecting libde265 package, versions <1.1.3-r0


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.39% (31st percentile)

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  • Snyk IDSNYK-ALPINE324-LIBDE265-21663540
  • published24 Oct 2026
  • disclosed11 Sept 2026

Introduced: 11 Sep 2026

CVE-2026-54241  (opens in a new tab)
CWE-122  (opens in a new tab)
CWE-190  (opens in a new tab)

How to fix?

Upgrade Alpine:3.24 libde265 to version 1.1.3-r0 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 Alpine. See How to fix? for Alpine:3.24 relevant fixed versions and status.

libde265 is an open source implementation of the h.265 video codec. Versions prior to 1.1.1 use signed 32-bit arithmetic to calculate the sample adaptive offset input-buffer size, allowing a crafted HEVC stream with large dimensions and 16-bit luma samples to cause an integer overflow, an undersized allocation, and an out-of-bounds heap read that may expose heap data in decoded output or crash the decoder. Version 1.1.1 contains a patch.