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-18579013
  • published7 Aug 2026
  • disclosed6 Aug 2026

Introduced: 6 Aug 2026

NewCVE-2026-70629  (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 RSCC decoder (libavcodec/rscc.c) that allows attackers to disclose heap memory contents by supplying a crafted video file with a compressed tile that decompresses fewer bytes than the declared tile geometry requires. When rscc_decode_frame() calls av_image_copy_plane() without validating the decompressed byte count against the tile dimensions, the unwritten suffix of the persistent intermediate buffer ctx->inflated_buf is copied into the decoded frame, potentially exposing data from prior heap allocations or previous decoded frames in persistent decoding services.

CVSS Base Scores

version 3.1