Use of Uninitialized Resource Affecting ffmpeg package, versions <7:7.1.5-0+deb13u1+e3


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.13% (4th percentile)

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  • Snyk IDSNYK-ECHOLATEST-FFMPEG-18579015
  • published7 Aug 2026
  • disclosed6 Aug 2026

Introduced: 6 Aug 2026

NewCVE-2026-70630  (opens in a new tab)
CWE-908  (opens in a new tab)

How to fix?

Upgrade Echo:latest ffmpeg to version 7:7.1.5-0+deb13u1+e3 or higher.

NVD Description

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

FFmpeg versions from 3.0 up to, but not including, 9.0 contain an uninitialized heap memory read vulnerability in the native Screenpresso decoder (libavcodec/screenpresso.c) that allows attackers to recover sensitive memory contents by supplying a crafted SPV1 packet with a valid zlib stream that decompresses fewer bytes than the full frame requires. The screenpresso_decode_frame() function fails to validate the produced byte count before calling av_image_copy_plane() to copy the complete frame dimensions from the persistent ctx->inflated_buf buffer, causing unwritten heap memory from prior allocations or prior frames to be copied into decoded output and potentially exposing sensitive data such as userspace addresses from persistent decoding services.

CVSS Base Scores

version 3.1