CVE-2026-49337
libde265 has an unbounded memory leak via orphaned slice headers in `read_slice_NAL`
Description
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.
INFO
Published Date :
June 19, 2026, 7:53 p.m.
Last Modified :
June 19, 2026, 8:10 p.m.
Remotely Exploit :
No
Source :
GitHub_M
Affected Products
The following products are affected by CVE-2026-49337
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 1.0.20 or later.
- Apply vendor patches if available.
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