CVE-2026-45382

libde265 has a heap-buffer-overflow READ in decode_slice_unit_tiles via unvalidated PPS tile geometry

Published: Jul 21, 2026Updated: Jul 23, 2026 Sources: CVE List NVDCWE-125

N/ACVSS

NVD MITRE

Description

libde265 is an open source implementation of the h.265 video codec. Prior to version 1.0.19, `decoder_context::decode_slice_unit_tiles` (libde265/decctx.cc:920) reads `pps.CtbAddrRStoTS[ctbAddrRS]` at line 966 where `ctbAddrRS = ctbY * ctbsWidth + ctbX` is computed from PPS-supplied `colBd[]`/`rowBd[]` arrays without validating the result against `CtbAddrRStoTS.size() == sps->PicSizeInCtbsY`. A malformed PPS that passes `set_derived_values` but encodes geometry inconsistent with the SPS produces a `ctbAddrRS` past the allocation, causing a 4-byte heap-buffer-overflow READ. Version 1.0.19 fixes the issue.

No summary for this CVE yet.

Weaknesses

CWE-125

Affected Products

strukturag

oss-projectaka libheif, libde265, strukturag/libde265

libde265Library

OSS Libraries / generic-library

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

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References

https://github.com/strukturag/libde265/security/advisories/GHSA-hwhx-x2mq-ccr9

github.com

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