CVE-2026-49346

Published: Jun 19, 2026Modified: Jun 26, 2026

7.1

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H

Exploitability: 2.8 / Impact: 4.2

Source: security-advisories@github.com (Secondary)

Description

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 (1)

Products: Struktur: Libde265

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Struktur Libde265	Before 1.1.0

Related CWEs

Integer Overflow or Wraparound

The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

References (3)

https://github.com/strukturag/libde265/commit/8a1b5cf212f78e1c77cb46eb5d56e492a9336eb8

Source: security-advisories@github.com

Patch

https://github.com/strukturag/libde265/security/advisories/GHSA-vv8h-932h-7r86

Source: security-advisories@github.com

ExploitVendor Advisory

https://github.com/strukturag/libde265/security/advisories/GHSA-vv8h-932h-7r86

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

ExploitVendor Advisory

Timeline

No history available yet.