CVE catalog
CVE-2009-0749
optipng: CVE-2009-0749
- Severity
- Medium
- Published
- Source
- [NVD] · [CVE record]
- EPSS
- 1.55% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | optipng | sid | 7.9.1+ds-2 | fixed |
| Debian | optipng | forky | 7.9.1+ds-2 | fixed |
| Debian | optipng | trixie | 0.7.8+ds-1 | fixed |
| Debian | optipng | bookworm | 0.7.7-2 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | optipng | source | sid | 0.6.2.1-1 | low | Not reported | Not reported |
| Debian | optipng | source | forky | 0.6.2.1-1 | low | Not reported | Not reported |
| Debian | optipng | source | trixie | 0.6.2.1-1 | low | Not reported | Not reported |
| Debian | optipng | source | bookworm | 0.6.2.1-1 | low | Not reported | Not reported |