CVE-2026-12706

EUVD-2026-38004
A use-after-free vulnerability was found in FFmpeg's RASC video decoder. The decode_move() function initializes a read pointer into a decompressed buffer, but a subsequent reallocation of that same buffer during move-table processing leaves the pointer dangling. An attacker could exploit this by providing a specially crafted AVI file containing a malicious RASC video stream. When a user opens or plays the file, the decoder reads from freed heap memory, which could lead to a denial of service (crash).
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
6.5 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: 15.95%
Debian logo
Debian Releases
Debian Product
Codename
ffmpeg
bookworm
7:5.1.9-0+deb12u1
fixed
bookworm (security)
7:5.1.9-0+deb12u1
fixed
forky
7:8.1.2-2
fixed
sid
7:8.1.2-2
fixed
trixie
7:7.1.5-0+deb13u1
fixed
trixie (security)
7:7.1.5-0+deb13u1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
ffmpeg
bionic
needs-triage
focal
Fixed 7:4.2.7-0ubuntu0.1+esm17
released
jammy
Fixed 7:4.4.2-0ubuntu0.22.04.1+esm16
released
noble
needs-triage
questing
ignored
resolute
needs-triage
xenial
needs-triage
libav
jammy
dne
noble
dne
questing
dne
resolute
dne
trusty
needs-triage
openSUSE logo
openSUSE / SLES Releases
openSUSE Product
Release
libavcodec58_134
suse enterprise desktop 15 SP7
4.4.8-150600.13.52.1
fixed
suse enterprise sap 15 SP4
4.4.8-150400.3.72.1
fixed
suse enterprise sap 15 SP7
4.4.8-150600.13.52.1
fixed
suse enterprise server 15 SP4
4.4.8-150400.3.72.1
fixed
suse enterprise server 15 SP7
4.4.8-150600.13.52.1
fixed
suse enterprise workstation 15 SP7
4.4.8-150600.13.52.1
fixed
libavformat58_76
suse enterprise desktop 15 SP7
4.4.8-150600.13.52.1
fixed
suse enterprise sap 15 SP4
4.4.8-150400.3.72.1
fixed
suse enterprise sap 15 SP7
4.4.8-150600.13.52.1
fixed
suse enterprise server 15 SP4
4.4.8-150400.3.72.1
fixed
suse enterprise server 15 SP7
4.4.8-150600.13.52.1
fixed
suse enterprise workstation 15 SP7
4.4.8-150600.13.52.1
fixed
libavutil56_70
suse enterprise desktop 15 SP7
4.4.8-150600.13.52.1
fixed
suse enterprise sap 15 SP4
4.4.8-150400.3.72.1
fixed
suse enterprise sap 15 SP7
4.4.8-150600.13.52.1
fixed
suse enterprise server 15 SP4
4.4.8-150400.3.72.1
fixed
suse enterprise server 15 SP7
4.4.8-150600.13.52.1
fixed
suse enterprise workstation 15 SP7
4.4.8-150600.13.52.1
fixed
libpostproc55_9
suse enterprise sap 15 SP4
4.4.8-150400.3.72.1
fixed
suse enterprise server 15 SP4
4.4.8-150400.3.72.1
fixed
libswresample3_9
suse enterprise desktop 15 SP7
4.4.8-150600.13.52.1
fixed
suse enterprise sap 15 SP4
4.4.8-150400.3.72.1
fixed
suse enterprise sap 15 SP7
4.4.8-150600.13.52.1
fixed
suse enterprise server 15 SP4
4.4.8-150400.3.72.1
fixed
suse enterprise server 15 SP7
4.4.8-150600.13.52.1
fixed
suse enterprise workstation 15 SP7
4.4.8-150600.13.52.1
fixed
libswscale5_9
suse enterprise desktop 15 SP7
4.4.8-150600.13.52.1
fixed
suse enterprise sap 15 SP4
4.4.8-150400.3.72.1
fixed
suse enterprise sap 15 SP7
4.4.8-150600.13.52.1
fixed
suse enterprise server 15 SP4
4.4.8-150400.3.72.1
fixed
suse enterprise server 15 SP7
4.4.8-150600.13.52.1
fixed
suse enterprise workstation 15 SP7
4.4.8-150600.13.52.1
fixed
Common Weakness Enumeration
References
https://access.redhat.com/security/cve/CVE-2026-12706
https://bugzilla.redhat.com/show_bug.cgi?id=2490710
https://lists.ffmpeg.org/archives/list/ffmpeg-devel@ffmpeg.org/message/TTRIJZA7UL6KJTEDMMBGZPLLJERJ3EFX/
https://patchwork.ffmpeg.org/project/ffmpeg/patch/177766314111.63.10674887811034989327@29965ddac10e/