Use of Uninitialized Resource Affecting ffmpeg package, versions <7:4.4.2-0ubuntu0.22.04.1+esm16


Severity

Recommended
0.0
medium
0
10

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.13% (3rd percentile)

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  • Snyk IDSNYK-UBUNTU2204-FFMPEG-18585022
  • published14 Sept 2026
  • disclosed6 Aug 2026

Introduced: 6 Aug 2026

CVE-2026-70629  (opens in a new tab)
CWE-908  (opens in a new tab)

How to fix?

Upgrade Ubuntu:22.04 ffmpeg to version 7:4.4.2-0ubuntu0.22.04.1+esm16 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 Ubuntu. See How to fix? for Ubuntu:22.04 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