CVE-2026-54240 — libde265: Pixel accessor signed integer overflow causes heap OOB read/write

CVE-2026-54240

libde265: Pixel accessor signed integer overflow causes heap OOB read/write PUBLISHED

Description (CNA)

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 pixel offsets, allowing a crafted HEVC stream with large image dimensions to trigger an integer overflow and cause out-of-bounds heap reads or writes, potentially disclosing data, corrupting memory, or crashing the decoder. Version 1.1.1 contains a patch.

Affected (CNA)

Vendor / product	Versions
strukturag / libde265	affected < 1.1.1

CWE

CWE-190, CWE-787

References

https://github.com/strukturag/libde265/security/advisories/GHSA-ccfw-29x7-rrx3

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.