Use of Uninitialized Resource Affecting ffmpeg-4-libavdevice-devel package, versions <4.4.8-150600.13.55.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.18% (7th percentile)

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  • Snyk IDSNYK-SLES157-FFMPEG4LIBAVDEVICEDEVEL-19855084
  • published16 Sept 2026
  • disclosed14 Sept 2026

Introduced: 14 Sep 2026

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

How to fix?

Upgrade SLES:15.7 ffmpeg-4-libavdevice-devel to version 4.4.8-150600.13.55.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream ffmpeg-4-libavdevice-devel package and not the ffmpeg-4-libavdevice-devel package as distributed by SLES. See How to fix? for SLES:15.7 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