Use-after-free vulnerability in the GIFReadNextExtension function in…
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-416 and the CVSS impact.
Summary
Use-after-free vulnerability in the GIFReadNextExtension function in lib/pngxtern/gif/gifread.c in OptiPNG 0.6.2 and earlier allows context-dependent attackers to cause a denial of service (application crash) via a crafted GIF image that causes the realloc function to return a new pointer, which triggers memory corruption when the old pointer is accessed.
Why it matters now
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 · 3
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:optipng_project:optipng:*:*:*:*:*:*:*:* | up to 0.6.2 | Vulnerable | Optipng Project |
| cpe:2.3:o:opensuse:opensuse:*:*:*:*:*:*:*:* | 10.3 – 11.1 | Vulnerable | openSUSE |
| cpe:2.3:o:suse:linux_enterprise:9-11:*:*:*:*:*:*:* | 9-11 | Vulnerable | SUSE |
- cpe:2.3:a:optipng_project:optipng:*:*:*:*:*:*:*:* Versions up to 0.6.2 Vulnerable ·Optipng Project
- cpe:2.3:o:opensuse:opensuse:*:*:*:*:*:*:*:* Versions 10.3 – 11.1 Vulnerable ·openSUSE
- cpe:2.3:o:suse:linux_enterprise:9-11:*:*:*:*:*:*:* Versions 9-11 Vulnerable ·SUSE
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2009-0749
- 2026-10-03 Alias added: GHSA-pmrr-7vvq-vpj6
References
Patch 1
Sources
- CVE-2009-0749 · CVE Program
- CVE-2009-0749 · NVD
- FIRST EPSS
- GHSA-pmrr-7vvq-vpj6 · GitHub Advisory Database · CC BY 4.0
- CVE-2009-0749 · 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