Ffmpeg: ffmpeg: heap use-after-free read in rasc decoder decode_move()
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Deferred Red Hat: fix deferred
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-416 and the CVSS impact.
Summary
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).
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux AI (RHEL AI) 3 | — | — | No fix listed | CNA |
| Red Hat | Red Hat Enterprise Linux AI (RHEL AI) 3 | — | — | Not affected | CNA |
| Red Hat | Red Hat Enterprise Linux AI (RHEL AI) 3 | — | — | No fix listed | CNA |
| Red Hat | Red Hat Enterprise Linux AI (RHEL AI) 3 | — | — | No fix listed | CNA |
| Red Hat | Red Hat Enterprise Linux AI (RHEL AI) 3 | — | — | No fix listed | CNA |
| Red Hat | Red Hat Enterprise Linux AI (RHEL AI) 3 | — | — | No fix listed | CNA |
| Red Hat | Red Hat Enterprise Linux AI (RHEL AI) 3 | — | — | No fix listed | CNA |
| Red Hat | Red Hat Enterprise Linux AI (RHEL AI) 3 | — | — | No fix listed | CNA |
| Red Hat | Red Hat OpenShift AI (RHOAI) | — | — | Not affected | CNA |
| Red Hat | Red Hat OpenShift AI (RHOAI) | — | — | No fix listed | CNA |
- Red Hat Enterprise Linux AI (RHEL AI) 3 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat Enterprise Linux AI (RHEL AI) 3 VendorRed Hat Affected — Fixed in — Not affected CNA
- Red Hat Enterprise Linux AI (RHEL AI) 3 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat Enterprise Linux AI (RHEL AI) 3 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat Enterprise Linux AI (RHEL AI) 3 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat Enterprise Linux AI (RHEL AI) 3 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat Enterprise Linux AI (RHEL AI) 3 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat Enterprise Linux AI (RHEL AI) 3 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat OpenShift AI (RHOAI) VendorRed Hat Affected — Fixed in — Not affected CNA
- Red Hat OpenShift AI (RHOAI) VendorRed Hat Affected — Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux AI (RHEL AI) 3 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift AI (RHOAI) | Affected | No fix yet: Fix deferred |
Not affected: 2 products
- Red Hat Enterprise Linux AI (RHEL AI) 3
- Red Hat OpenShift AI (RHOAI)
Timeline
- 2026-10-02 Threatist record created from CVE-2026-12706
- 2026-10-03 Alias added: GHSA-qh4m-69pj-9vc2
References
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Sources
- CVE-2026-12706 · CVE Program
- CVE-2026-12706 · NVD
- FIRST EPSS
- GHSA-qh4m-69pj-9vc2 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-12706 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences