CVE-2026-49337

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.

• libde265 1.1.1-1 (bug https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1140431) https://github.com/strukturag/libde265/security/advisories/GHSA-g5hj-rf9f-7vxm Fixed by: https://github.com/strukturag/libde265/commit/683cb9fa603e35840642f98765ab95cdb71cadf9 (v1.1.0)