Buffer overflow in the calc_coeff function in libass/ass_blur.c in libass before 0.13.4…
Priority MEDIUM 40CWE-119Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.
Summary
Buffer overflow in the calc_coeff function in libass/ass_blur.c in libass before 0.13.4 allows remote attackers to cause a denial of service via unspecified vectors.
Why it matters now
EPSS 0.04659 91st percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:fedoraproject:fedora:23:*:*:*:*:*:*:* | 23 | Vulnerable | Fedoraproject |
| cpe:2.3:o:fedoraproject:fedora:24:*:*:*:*:*:*:* | 24 | Vulnerable | Fedoraproject |
| cpe:2.3:o:fedoraproject:fedora:25:*:*:*:*:*:*:* | 25 | Vulnerable | Fedoraproject |
| cpe:2.3:a:libass_project:libass:*:*:*:*:*:*:*:* | up to 0.13.3 | Vulnerable | Libass Project |
- cpe:2.3:o:fedoraproject:fedora:23:*:*:*:*:*:*:* Versions 23 Vulnerable ·Fedoraproject
- cpe:2.3:o:fedoraproject:fedora:24:*:*:*:*:*:*:* Versions 24 Vulnerable ·Fedoraproject
- cpe:2.3:o:fedoraproject:fedora:25:*:*:*:*:*:*:* Versions 25 Vulnerable ·Fedoraproject
- cpe:2.3:a:libass_project:libass:*:*:*:*:*:*:*:* Versions up to 0.13.3 Vulnerable ·Libass Project
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2016-7970
- 2026-10-03 Alias added: GHSA-5phf-q389-vx4x
References
Patch 5
Sources
- CVE-2016-7970 · CVE Program
- CVE-2016-7970 · NVD
- FIRST EPSS
- GHSA-5phf-q389-vx4x · GitHub Advisory Database · CC BY 4.0
- CVE-2016-7970 · 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