Medium severity5.5NVD Advisory· Published Mar 20, 2026· Updated Jun 17, 2026
CVE-2026-33165
CVE-2026-33165
Description
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.
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Affected products
3<1.0.17+ 2 more
- (no CPE)range: <1.0.17
- (no CPE)range: < 1.0.17
- cpe:2.3:a:struktur:libde265:*:*:*:*:*:*:*:*range: <1.0.17
Patches
Vulnerability mechanics
References
3- github.com/strukturag/libde265/commit/c7891e412106130b83f8e8ea8b7f907e9449b658nvdPatch
- github.com/strukturag/libde265/security/advisories/GHSA-653q-9f73-8hvgnvdExploitPatchVendor Advisory
- github.com/strukturag/libde265/releases/tag/v1.0.17nvdRelease Notes
News mentions
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