libde265 is an open source implementation of the h.265 video codec. Prior to version 1.0.20, a crafted sequence of H.265 NAL units causes `decoder_context::read_slice_NAL()` (`libde265/decctx.cc:481`) to attach slice headers to a finished picture object that has no active image unit, resulting in attacker-controlled unbounded heap growth. The retained headers are never freed until the picture is released, which may not happen during continuous streaming. Version 1.0.20 patches the issue.
CVSS Details
- CVSS 3.1 Base Score: 4.3
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon_linux_2023 | — | Upgrade libde265-debuginfoUpgrade libde265-debugsourceUpgrade libde265Upgrade libde265-devel | Jul 8, 2026 | Jun 19, 2026 |
| Debian | — | Upgrade libde265 | Aug 9, 2026 | Aug 9, 2026 |
| Ubuntu | — | Upgrade libde265-0 (Ubuntu Pro)Upgrade libde265-dev (Ubuntu Pro)Upgrade libde265-0Upgrade libde265-devNo solution exists | Jul 21, 2026 | Jul 20, 2026 |
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