{"id":"CVE-2026-45383","summary":"libde265 has a heap buffer overflow (OOB read) in decode_slice_unit_WPP() via out-of-bounds CtbAddrRStoTS access — libde265 \u003c= v1.0.18","details":"libde265 is an open source implementation of the h.265 video codec. Versions prior to 1.0.19 have a heap buffer overflow (out-of-bounds READ) exists in `decoder_context::decode_slice_unit_WPP()` in `libde265/decctx.cc`. When decoding a WPP (Wavefront Parallel Processing) HEVC slice, `ctbAddrRS` is computed as `ctbRow * ctbsWidth` inside the entry-point loop. If the PPS/SPS headers are crafted so that this value exceeds `pps.CtbAddrRStoTS.size()`, the subsequent array access `pps.CtbAddrRStoTS[ctbAddrRS]` reads past the end of the allocated vector, triggering a heap-buffer-overflow confirmed by AddressSanitizer. Version 1.0.19 patches the issue.","aliases":["GHSA-wg9q-ppqw-6q38"],"modified":"2026-07-25T03:56:39.940366639Z","published":"2026-07-21T21:00:30.875Z","database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-125"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45383.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45383.json"},{"type":"ADVISORY","url":"https://github.com/strukturag/libde265/security/advisories/GHSA-wg9q-ppqw-6q38"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-45383"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/strukturag/libde265","events":[{"introduced":"0"},{"fixed":"824b4138ecd51611d7073f1b50d5d6f982609b06"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"1.0.19"}],"source":"AFFECTED_FIELD"}}],"versions":["v1.0.18","v1.0.17","v1.0.16","v1.0.15","v1.0.14","v1.0.13","v1.0.12","v1.0.11","v1.0.10","v1.0.9","v1.0.8","v1.0.7","v1.0.6","v1.0.5","v1.0.4","v1.0.3","v1.0.0","v0.5","v0.4","v0.3","v0.2","v0.1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-45383.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N"}]}