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Vulnerability Details :

CVE-2026-12706

Summary
Assigner-redhat
Assigner Org ID-53f830b8-0a3f-465b-8143-3b8a9948e749
Published At-19 Jun, 2026 | 10:55
Updated At-22 Jun, 2026 | 19:28
Rejected At-
Credits

Ffmpeg: ffmpeg: heap use-after-free read in rasc decoder decode_move()

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).

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
â–¼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:redhat
Assigner Org ID:53f830b8-0a3f-465b-8143-3b8a9948e749
Published At:19 Jun, 2026 | 10:55
Updated At:22 Jun, 2026 | 19:28
Rejected At:
â–¼CVE Numbering Authority (CNA)
Ffmpeg: ffmpeg: heap use-after-free read in rasc decoder decode_move()

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).

Affected Products
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux AI (RHEL AI) 3
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
ffmpeg
CPEs
  • cpe:/a:redhat:enterprise_linux_ai:3
Default Status
affected
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux AI (RHEL AI) 3
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
nv-codec-headers
CPEs
  • cpe:/a:redhat:enterprise_linux_ai:3
Default Status
unaffected
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux AI (RHEL AI) 3
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
rhelai3/bootc-aws-cuda-rhel9
CPEs
  • cpe:/a:redhat:enterprise_linux_ai:3
Default Status
affected
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux AI (RHEL AI) 3
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
rhelai3/bootc-azure-cuda-rhel9
CPEs
  • cpe:/a:redhat:enterprise_linux_ai:3
Default Status
affected
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux AI (RHEL AI) 3
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
rhelai3/bootc-azure-rocm-rhel9
CPEs
  • cpe:/a:redhat:enterprise_linux_ai:3
Default Status
affected
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux AI (RHEL AI) 3
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
rhelai3/bootc-cuda-rhel9
CPEs
  • cpe:/a:redhat:enterprise_linux_ai:3
Default Status
affected
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux AI (RHEL AI) 3
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
rhelai3/bootc-gcp-cuda-rhel9
CPEs
  • cpe:/a:redhat:enterprise_linux_ai:3
Default Status
affected
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux AI (RHEL AI) 3
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
rhelai3/bootc-rocm-rhel9
CPEs
  • cpe:/a:redhat:enterprise_linux_ai:3
Default Status
affected
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat OpenShift AI (RHOAI)
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
rhoai/odh-openvino-model-server-rhel9
CPEs
  • cpe:/a:redhat:openshift_ai
Default Status
unaffected
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat OpenShift AI (RHOAI)
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
rhoai/odh-vllm-gaudi-rhel9
CPEs
  • cpe:/a:redhat:openshift_ai
Default Status
affected
Problem Types
TypeCWE IDDescription
CWECWE-416Use After Free
Type: CWE
CWE ID: CWE-416
Description: Use After Free
Metrics
VersionBase scoreBase severityVector
3.16.5MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Version: 3.1
Base score: 6.5
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Metrics Other Info
Red Hat severity rating
value:
Moderate
namespace:
https://access.redhat.com/security/updates/classification/
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds

If the RASC decoder is not needed, it can be disabled at build time with --disable-decoder=rasc. There is no runtime workaround that disables the decoder without rebuilding FFmpeg.

Exploits
Credits
Upstream acknowledges Seung Min Shin as the original reporter.
Timeline
EventDate
Reported to Red Hat.2026-05-02 06:59:55
Made public.2026-05-01 00:00:00
Event: Reported to Red Hat.
Date: 2026-05-02 06:59:55
Event: Made public.
Date: 2026-05-01 00:00:00
Replaced By
Rejected Reason
References
HyperlinkResource
https://access.redhat.com/security/cve/CVE-2026-12706
vdb-entry
x_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2490710
issue-tracking
x_refsource_REDHAT
https://lists.ffmpeg.org/archives/list/ffmpeg-devel@ffmpeg.org/message/TTRIJZA7UL6KJTEDMMBGZPLLJERJ3EFX/
N/A
https://patchwork.ffmpeg.org/project/ffmpeg/patch/177766314111.63.10674887811034989327@29965ddac10e/
N/A
Hyperlink: https://access.redhat.com/security/cve/CVE-2026-12706
Resource:
vdb-entry
x_refsource_REDHAT
Hyperlink: https://bugzilla.redhat.com/show_bug.cgi?id=2490710
Resource:
issue-tracking
x_refsource_REDHAT
Hyperlink: https://lists.ffmpeg.org/archives/list/ffmpeg-devel@ffmpeg.org/message/TTRIJZA7UL6KJTEDMMBGZPLLJERJ3EFX/
Resource: N/A
Hyperlink: https://patchwork.ffmpeg.org/project/ffmpeg/patch/177766314111.63.10674887811034989327@29965ddac10e/
Resource: N/A
â–¼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
Information is not available yet
â–¼National Vulnerability Database (NVD)
nvd.nist.gov
Source:secalert@redhat.com
Published At:19 Jun, 2026 | 12:16
Updated At:22 Jun, 2026 | 20:16

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).

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary3.16.5MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
N/A
Type: Secondary
Version: 3.1
Base score: 6.5
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Type: N/A
Version:
Base score:
Base severity: N/A
Vector:
CPE Matches
Weaknesses
CWE IDTypeSource
CWE-416Secondarysecalert@redhat.com
CWE ID: CWE-416
Type: Secondary
Source: secalert@redhat.com
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://access.redhat.com/security/cve/CVE-2026-12706secalert@redhat.com
N/A
https://bugzilla.redhat.com/show_bug.cgi?id=2490710secalert@redhat.com
N/A
https://lists.ffmpeg.org/archives/list/ffmpeg-devel@ffmpeg.org/message/TTRIJZA7UL6KJTEDMMBGZPLLJERJ3EFX/secalert@redhat.com
N/A
https://patchwork.ffmpeg.org/project/ffmpeg/patch/177766314111.63.10674887811034989327@29965ddac10e/secalert@redhat.com
N/A
Hyperlink: https://access.redhat.com/security/cve/CVE-2026-12706
Source: secalert@redhat.com
Resource: N/A
Hyperlink: https://bugzilla.redhat.com/show_bug.cgi?id=2490710
Source: secalert@redhat.com
Resource: N/A
Hyperlink: https://lists.ffmpeg.org/archives/list/ffmpeg-devel@ffmpeg.org/message/TTRIJZA7UL6KJTEDMMBGZPLLJERJ3EFX/
Source: secalert@redhat.com
Resource: N/A
Hyperlink: https://patchwork.ffmpeg.org/project/ffmpeg/patch/177766314111.63.10674887811034989327@29965ddac10e/
Source: secalert@redhat.com
Resource: N/A

Change History

0
Information is not available yet

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