CVE-2026-49346: libde265 is an open source implementation of the h.265 video codec. Prior to version 1.1.0, a crafted H.265 bitstream with large SPS dimensions and 16-bit bit…

PriorityP334high7.1CVSS 3.1

AVNACLPRNUIRSUCNILAH

EPSS

0.23%

13.5th percentile

libde265 is an open source implementation of the h.265 video codec. Prior to version 1.1.0, a crafted H.265 bitstream with large SPS dimensions and 16-bit bit depth causes a signed integer overflow in `de265_image_get_buffer()` (`libde265/image.cc:128`). The overflow wraps the plane allocation size to a small value (~1 KB), but the subsequent `fill_image()` call computes the real size using `size_t`, writing ~4 GB into the undersized heap buffer. Version 1.1.0 patches the issue.

Affected

2 ranges

Vendor	Product	Version range	Fixed in
struktur	libde265	< 1.1.0	1.1.0
strukturag	libde265	< 1.1.0	1.1.0

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