Out-of-bounds Read Affecting libde265 package, versions <1.1.1-1


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.43% (36th percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-LIBDE265-17751092
  • published1 Jul 2026
  • disclosed21 Jul 2026

Introduced: 1 Jul 2026

CVE-2026-45382  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

Upgrade Debian:unstable libde265 to version 1.1.1-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libde265 package and not the libde265 package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

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-&gt;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.