# DSA-6076-1: libpng1.6 security update

DSA-6076-1, released December 10, 2025, fixes 1 CVE in libpng1.6. None of them is reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/fix/linux/dsa-6076-1
- Platform: Linux
- Released: Dec 10, 2025
- Priority: Routine (Closes CVE-2025-64505)
- CVEs: 1, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://security-tracker.debian.org/tracker/CVE-2025-64505

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [libpng1.6](https://patchblox.com/security/data/product/linux/libpng1.6.md) | Debian 12.15 (bookworm) | 1.6.39-2+deb12u1 |
| [libpng1.6](https://patchblox.com/security/data/product/linux/libpng1.6.md) | Debian 13.5 (trixie) | 1.6.48-1+deb13u1 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2025-64505](https://patchblox.com/security/data/cve/CVE-2025-64505.md) | Routine | LIBPNG is vulnerable to a heap buffer overflow in `png_do_quantize` via malformed palette index | 6.1 | 0.0021 |  |

---

Data as of 2026-11-07T06:34:28Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo