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Fencer Vulns
low 3.3

CVE-2025-12343 json

Ffmpeg: double-free vulnerability in ffmpeg tensorflow dnn backend

published 2026-02-18 8 mo ago modified 2026-07-25 3 mo ago also EUVD-2025-207797 , JLSEC-2026-642

cvss
3.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 6%
public exploits
0
none known

Summary

A flaw was found in FFmpeg’s TensorFlow backend within the libavfilter/dnn_backend_tf.c source file. The issue occurs in the dnn_execute_model_tf() function, where a task object is freed multiple times in certain error-handling paths. This redundant memory deallocation can lead to a double-free condition, potentially causing FFmpeg or any application using it to crash when processing TensorFlow-based DNN models. This results in a denial-of-service scenario but does not allow arbitrary code execution under normal conditions.

Patch / fix

  • julia FFMPEG_jll 8.1.0+0
  • julia FFMPEG_nogpl_jll 8.1.0+0
  • julia FFplay_jll 8.1.2+0
  • ffmpeg ffmpeg 8.1
  • ffmpeg Debian 13 7:7.1.2-0+deb13u1
  • ffmpeg Debian 14 7:7.1.2-1

debian advisories DEBIAN-CVE-2025-12343

  • ffmpeg Ubuntu Pro 24.04 LTS 7:6.1.1-3ubuntu5+esm10

ubuntu advisories UBUNTU-CVE-2025-12343

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2025-12343 updated cvss 3.3

FFmpeg: Double-Free Vulnerability in FFmpeg TensorFlow DNN Backend

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
8 mo ago

Exploit prediction

0.17% chance of exploitation in the next 30 days, higher than 6% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 3.3 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
OSV 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
julia FFMPEG_jll
>=6.1.1+0, <8.1.0+0
8.1.0+0
julia FFMPEG_nogpl_jll
<8.1.0+0
8.1.0+0
julia FFplay_jll
>=7.1.0+0, <8.1.2+0
8.1.2+0

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.