ALPINE-CVE-2026-45383

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Source

https://security.alpinelinux.org/vuln/CVE-2026-45383

Import Source

https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-45383.json

JSON Data

https://api.osv.dev/v1/vulns/ALPINE-CVE-2026-45383

Upstream

CVE-2026-45383

Published

2026-07-21T21:16:50Z

Modified

2026-10-23T18:30:03Z

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X CVSS Calculator

Summary

[none]

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.

References

https://security.alpinelinux.org/vuln/CVE-2026-45383

Affected packages

Alpine:v3.24 / libde265

Package

Name: libde265
Purl: pkg:apk/alpine/libde265?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Fixed

1.1.3-r0

Database specific

source

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