CVE-2026-49346
libde265 has a heap buffer overflow in de265_image_get_buffer via SPS dimension integer overflow
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.
INFO
Published Date :
June 19, 2026, 8:12 p.m.
Last Modified :
June 19, 2026, 8:12 p.m.
Remotely Exploit :
No
Source :
GitHub_M
Affected Products
The following products are affected by CVE-2026-49346
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Update libde265 to version 1.1.0.
- Apply patches if updating is not possible.
- Validate buffer size calculations.
- Mitigate crafted bitstream input.
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