Description
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.
Published: 2026-09-11
Score: 7.4 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

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Tracking

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Advisories
Source ID Title
Debian DSA Debian DSA DSA-6413-1 libde265 security update
Ubuntu USN Ubuntu USN USN-8573-1 libde265 vulnerabilities
History

Fri, 11 Sep 2026 23:45:00 +0000

Type Values Removed Values Added
Description 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.
Title libde265: SAO sequential filter heap buffer overflow via signed integer overflow
Weaknesses CWE-122
CWE-190
References
Metrics cvssV3_1

{'score': 7.4, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H'}


Subscriptions

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-09-11T21:21:59.190Z

Reserved: 2026-06-12T16:25:43.084Z

Link: CVE-2026-54241

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-11T22:16:38.223

Modified: 2026-09-11T22:16:38.223

Link: CVE-2026-54241

cve-icon Redhat

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cve-icon OpenCVE Enrichment

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Weaknesses
  • CWE-122

    Heap-based Buffer Overflow

  • CWE-190

    Integer Overflow or Wraparound