heap out-of-bounds write in libde265 1.0.16
Summary
heap out-of-bounds write in libde265 1.0.16
Original description
The description as published by the source.
libde265 is an open source implementation of the h.265 video codec. Prior to version 1.0.17, a crafted HEVC bitstream causes an out-of-bounds heap write confirmed by AddressSanitizer. The trigger is a stale ctb_info.log2unitSize after an SPS change where PicWidthInCtbsY and PicHeightInCtbsY stay constant but Log2CtbSizeY changes, causing set_SliceHeaderIndex to index past the allocated image metadata array and write 2 bytes past the end of a heap allocation. This issue has been patched in version 1.0.17.
Source: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV
Fix status by distribution
Fixed packages published by each distribution for this CVE
- Alpine Linux ALPINE-CVE-2026-33165 libde265 Fixed in: 1.0.18-r0
- Debian DEBIAN-CVE-2026-33165 libde265 Fixed in: 1.0.11-0+deb11u4
- Ubuntu UBUNTU-CVE-2026-33165 libde265 Fixed in: 1.0.2-2ubuntu0.16.04.1~esm6
References
- advisory github.com
- advisory github.com
- advisory nvd.nist.gov
- patch github.com
- web github.com