Integer Overflow or Wraparound Affecting libde265 package, versions <1.0.2-2ubuntu0.18.04.1~esm6
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UBUNTU1804-LIBDE265-17399566
- published18 Jul 2026
- disclosed19 Jun 2026
Introduced: 19 Jun 2026
CVE-2026-49346 (opens in a new tab)How to fix?
Upgrade Ubuntu:18.04 libde265 to version 1.0.2-2ubuntu0.18.04.1~esm6 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream libde265 package and not the libde265 package as distributed by Ubuntu.
See How to fix? for Ubuntu:18.04 relevant fixed versions and status.
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.