CVE-2026-45383

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Source
https://cve.org/CVERecord?id=CVE-2026-45383
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-45383.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-45383
Aliases
  • GHSA-wg9q-ppqw-6q38
Downstream
Published
2026-07-21T21:00:30.875Z
Modified
2026-07-24T03:56:43.785175976Z
Severity
  • 6.9 (Medium) CVSS_V4 - 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 CVSS Calculator
Summary
libde265 has a heap buffer overflow (OOB read) in decode_slice_unit_WPP() via out-of-bounds CtbAddrRStoTS access — libde265 <= 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.

Database specific 
{
    "cwe_ids": [
        "CWE-125"
    ],
    "cna_assigner": "GitHub_M",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45383.json"
}
References

Affected packages

Git / github.com/strukturag/libde265

Affected ranges

Type
GIT
Repo
https://github.com/strukturag/libde265
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
824b4138ecd51611d7073f1b50d5d6f982609b06
Database specific 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "1.0.19"
        }
    ],
    "source": "AFFECTED_FIELD"
}

Affected versions

v0.*
v0.1
v0.2
v0.3
v0.4
v0.5
v1.*
v1.0.0
v1.0.10
v1.0.11
v1.0.12
v1.0.13
v1.0.14
v1.0.15
v1.0.16
v1.0.17
v1.0.18
v1.0.3
v1.0.4
v1.0.5
v1.0.6
v1.0.7
v1.0.8
v1.0.9

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-45383.json"