Description
LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. Prior to 1.6.52, an out-of-bounds read vulnerability in libpng's simplified API allows reading up to 1012 bytes beyond the png_sRGB_base[512] array when processing valid palette PNG images with partial transparency and gamma correction. The PNG files that trigger this vulnerability are valid per the PNG specification; the bug is in libpng's internal state management. Upgrade to libpng 1.6.52 or later.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| pnggroup | libpng | < 1.6.52 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | libpng1.6 | 1.6.52-1 | — |
| Debian 13 | libpng1.6 | 1.6.48-1+deb13u1 | DSA-6076-1 |
| Debian 12 | libpng1.6 | 1.6.39-2+deb12u1 | DSA-6076-1 |
| Debian 11 | libpng1.6 | 1.6.37-3+deb11u1 | DLA-4396-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 25.10 | libpng1.6 | 1.6.50-1ubuntu0.3 | USN-7963-1 |
| Ubuntu 24.04 LTS | libpng1.6 | 1.6.43-5ubuntu0.3 | USN-7963-1 |
| Ubuntu 22.04 LTS | libpng1.6 | 1.6.37-3ubuntu0.3 | USN-7963-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | libpng1.6 | 1.6.37-2ubuntu0.1~esm2 | USN-8035-1 |
| Ubuntu Pro 18.04 LTS | libpng1.6 | 1.6.34-1ubuntu0.18.04.2+esm2 | USN-8035-1 |
| Ubuntu Pro 16.04 LTS | libpng1.6 | 1.6.20-2ubuntu0.1~esm3 | USN-8035-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10 | libpng +1 | 2:1.6.40-8.el10_1.1 | RHSA-2026:0237 |
| RHEL 9 | libpng +1 | 2:1.6.37-12.el9_7.1 | RHSA-2026:0238 |
| RHEL 8 | libpng +1 | 2:1.6.34-9.el8_10 | RHSA-2026:0241 |
| RHEL 8 | mingw-libpng +4 | 1.6.34-1.el8_10 | RHSA-2026:0125 |
Show 14 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10.0 EUS | libpng +1 | 2:1.6.40-8.el10_0.1 | RHSA-2026:0212 |
| RHEL 9.6 EUS | libpng +1 | 2:1.6.37-12.el9_6.1 | RHSA-2026:0210 |
| RHEL 9.4 EUS | libpng +1 | 2:1.6.37-12.el9_4.1 | RHSA-2026:0211 |
| RHEL 9.2 E4S | libpng +1 | 2:1.6.37-12.el9_2.1 | RHSA-2026:0216 |
| RHEL 9.0 E4S | libpng +1 | 2:1.6.37-12.el9_0.1 | RHSA-2026:0234 |
| RHEL 8.8 TUS | libpng +1 | 2:1.6.34-8.el8_8.1 | RHSA-2026:0313 |
| RHEL 8.8 E4S | libpng +1 | 2:1.6.34-8.el8_8.1 | RHSA-2026:0313 |
| RHEL 8.6 TUS | libpng +1 | 2:1.6.34-8.el8_6.1 | RHSA-2026:0322 |
| RHEL 8.6 E4S | libpng +1 | 2:1.6.34-8.el8_6.1 | RHSA-2026:0322 |
| RHEL 8.6 AUS | libpng +1 | 2:1.6.34-8.el8_6.1 | RHSA-2026:0322 |
| RHEL 8.4 EUS Long Life | libpng +1 | 2:1.6.34-8.el8_4.1 | RHSA-2026:0321 |
| RHEL 8.4 AUS | libpng +1 | 2:1.6.34-8.el8_4.1 | RHSA-2026:0321 |
| RHEL 8.2 AUS | libpng +1 | 2:1.6.34-8.el8_2.1 | RHSA-2026:0323 |
| Red Hat Hardened Images 1 | libpng +3 | 1.6.56-1.hum1 | RHSA-2026:80330, RHSA-2026:6732 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 10 | java-21-openjdk +22 | 1:21.0.11.0.10-2.el10_2.alma.1 | ALSA-2026:9689 |
| AlmaLinux 10 | libpng +1 | 2:1.6.40-8.el10_1.1 | ALSA-2026:0237 |
| AlmaLinux 9 | java-1.8.0-openjdk +16 | 1:1.8.0.492.b09-2.el9.alma.1 | ALSA-2026:9683 |
| AlmaLinux 9 | java-17-openjdk +22 | 1:17.0.19.0.10-2.el9.alma.1 | ALSA-2026:9686 |
| AlmaLinux 9 | java-21-openjdk +22 | 1:21.0.11.0.10-2.el9.alma.1 | ALSA-2026:9689 |
| AlmaLinux 9 | libpng +1 | 2:1.6.37-12.el9_7.1 | ALSA-2026:0238 |
| AlmaLinux 8 | java-1.8.0-openjdk +19 | 1:1.8.0.492.b09-1.el8 | ALSA-2026:9683 |
| AlmaLinux 8 | java-17-openjdk +22 | 1:17.0.19.0.10-1.el8 | ALSA-2026:9686 |
| AlmaLinux 8 | java-21-openjdk +22 | 1:21.0.11.0.10-1.el8 | ALSA-2026:9689 |
| AlmaLinux 8 | libpng +1 | 2:1.6.34-9.el8_10 | ALSA-2026:0241 |
| AlmaLinux 8 | mingw32-libpng +3 | 1.6.34-1.el8_10 | ALSA-2026:0125 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 10 | libpng | 2:1.6.40-8.el10_1.1 | RLSA-2026:0237 |
| Rocky Linux 9 | libpng | 2:1.6.37-12.el9_7.1 | RLSA-2026:0238 |
| Rocky Linux 8 | libpng | 2:1.6.34-9.el8_10 | RLSA-2026:0241 |
| Rocky Linux 8 | mingw-libpng | 1.6.34-1.el8_10 | RLSA-2026:0125 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | libpng16 | 1.6.40-150600.3.3.1 | SUSE-SU-2025:4494-1 |
| SLES 15 SP6 | libpng16 | 1.6.40-150600.3.3.1 | SUSE-SU-2025:4494-1 |
| SLES 15 SP5 | libpng16 | 1.6.34-150000.3.12.1 | SUSE-SU-2025:4436-1 |
| SLES 15 SP4 | libpng16 | 1.6.34-150000.3.12.1 | SUSE-SU-2025:4436-1 |
| SLES 15 SP3 | libpng16 | 1.6.34-150000.3.12.1 | SUSE-SU-2025:4436-1 |
Show 19 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP5 | libpng16 | 1.6.8-15.12.1 | SUSE-SU-2026:0085-1 |
| SLES for SAP 16.0 | libpng16 | 1.6.44-160000.3.1 | SUSE-SU-2026:20030-1 |
| SLES for SAP 15 SP5 | libpng16 | 1.6.34-150000.3.12.1 | SUSE-SU-2025:4436-1 |
| SLES for SAP 15 SP4 | libpng16 | 1.6.34-150000.3.12.1 | SUSE-SU-2025:4436-1 |
| SLES for SAP 15 SP3 | libpng16 | 1.6.34-150000.3.12.1 | SUSE-SU-2025:4436-1 |
| SLES 16.0 | libpng16 | 1.6.44-160000.3.1 | SUSE-SU-2026:20030-1 |
| SLE Micro 6.2 | libpng16 | 1.6.44-160000.3.1 | SUSE-SU-2026:20073-1 |
| SLE Micro 6.1 | libpng16 | 1.6.43-slfo.1.1_2.1 | SUSE-SU-2026:23514-1, SUSE-SU-2025:21220-1 |
| SLE Micro 6.0 | libpng16 | 1.6.43-2.1 | SUSE-SU-2026:23063-1, SUSE-SU-2025:21217-1 |
| SLE Micro 5.5 | libpng16 | 1.6.34-150000.3.12.1 | SUSE-SU-2025:4436-1 |
| SLE Micro 5.4 | libpng16 | 1.6.34-150000.3.12.1 | SUSE-SU-2025:4436-1 |
| SLE Micro 5.3 | libpng16 | 1.6.34-150000.3.12.1 | SUSE-SU-2025:4436-1 |
| SLE Micro 5.2 | libpng16 | 1.6.34-150000.3.12.1 | SUSE-SU-2025:4436-1 |
| SLE HPC 15 SP5 | libpng16 | 1.6.34-150000.3.12.1 | SUSE-SU-2025:4436-1 |
| SLE HPC 15 SP4 | libpng16 | 1.6.34-150000.3.12.1 | SUSE-SU-2025:4436-1 |
| SLE HPC 15 SP3 | libpng16 | 1.6.34-150000.3.12.1 | SUSE-SU-2025:4436-1 |
| SUSE Manager Server LTS 4.3 | libpng16 | 1.6.34-150000.3.12.1 | SUSE-SU-2025:4436-1 |
| SUSE Manager Proxy LTS 4.3 | libpng16 | 1.6.34-150000.3.12.1 | SUSE-SU-2025:4436-1 |
| SUSE Enterprise Storage 7.1 | libpng16 | 1.6.34-150000.3.12.1 | SUSE-SU-2025:4436-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | libpng16 | 1.6.52-1.1 | openSUSE-SU-2025:15801-1 |
| openSUSE Leap 16.0 | libpng16 | 1.6.44-160000.3.1 | openSUSE-SU-2026:20017-1 |
| openSUSE Leap 15.6 | libpng16 | 1.6.40-150600.3.3.1 | SUSE-SU-2025:4494-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | libpng | 1.6.53-r0 | — |
| Alpine v3.23 | libpng | 1.6.53-r0 | — |
| Alpine v3.22 | libpng | 1.6.53-r0 | — |
| Alpine v3.21 | libpng | 1.6.53-r0 | — |
| Alpine v3.20 | libpng | 1.6.53-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | firefox | 140.6.0-1.amzn2023.0.1 | ALAS2023-2025-1337 |
| Amazon Linux 2023 | libpng +3 | 2:1.6.37-10.amzn2023.0.8 | ALAS2023-2025-1332 |
| Amazon Linux 2 | thunderbird | 140.6.0-1.amzn2.0.1 | ALAS2-2025-3108 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | fltk +5 | No fix yet | — |
| Azure Linux 3 | libpng | 1.6.52-1 | — |
| Azure Linux 2 (CBL-Mariner) | fltk +4 | No fix yet | — |
| Azure Linux 2 (CBL-Mariner) | qt5-qtbase | 5.12.11-19 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 10 | libpng +1 | 2:1.6.40-8.el10_1.1 | ELSA-2026-0237 |
| Oracle Linux 9 | libpng +1 | 2:1.6.37-12.el9_7.1 | ELSA-2026-0238 |
| Oracle Linux 8 | libpng +1 | 2:1.6.34-9.el8_10 | ELSA-2026-0241 |
| Oracle Linux 8 | mingw32-libpng +3 | 1.6.34-1.el8_10 | ELSA-2026-0125 |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | libpng | 1.6.52-r0 | — |
Advisories 50
- ALSA-2026:0237 Important: libpng security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:0238 Important: libpng security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:9686 Important: java-17-openjdk security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:9689 Important: java-21-openjdk security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:9683 Important: java-1.8.0-openjdk security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:0241 Important: libpng security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:0125 Important: mingw-libpng security update AlmaLinux Security Advisories · Oct 29, 2026
- WID-SEC-2026-2919 IBM App Connect Enterprise: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 27, 2026
- USN-8035-1 libpng1.6 vulnerabilities Ubuntu Security Notices (USN) · Oct 27, 2026
- RHSA-2026:80330 Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update Red Hat Security Advisories (RHSA) · Oct 16, 2026
- RHSA-2026:6732 Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update Red Hat Security Advisories (RHSA) · Oct 16, 2026
- RHSA-2026:0323 Red Hat Security Advisory: libpng security update Red Hat Security Advisories (RHSA) · Oct 16, 2026
- RHSA-2026:0322 Red Hat Security Advisory: libpng security update Red Hat Security Advisories (RHSA) · Oct 16, 2026
- RHSA-2026:0321 Red Hat Security Advisory: libpng security update Red Hat Security Advisories (RHSA) · Oct 16, 2026
- RHSA-2026:0313 Red Hat Security Advisory: libpng security update Red Hat Security Advisories (RHSA) · Oct 16, 2026
- RHSA-2026:0238 Red Hat Security Advisory: libpng security update Red Hat Security Advisories (RHSA) · Oct 16, 2026
- RHSA-2026:0241 Red Hat Security Advisory: libpng security update Red Hat Security Advisories (RHSA) · Oct 16, 2026
- RHSA-2026:0234 Red Hat Security Advisory: libpng security update Red Hat Security Advisories (RHSA) · Oct 16, 2026
- RHSA-2026:0237 Red Hat Security Advisory: libpng security update Red Hat Security Advisories (RHSA) · Oct 16, 2026
- RHSA-2026:0216 Red Hat Security Advisory: libpng security update Red Hat Security Advisories (RHSA) · Oct 16, 2026
- RHSA-2026:0212 Red Hat Security Advisory: libpng security update Red Hat Security Advisories (RHSA) · Oct 16, 2026
- RHSA-2026:0210 Red Hat Security Advisory: libpng security update Red Hat Security Advisories (RHSA) · Oct 16, 2026
- RHSA-2026:0211 Red Hat Security Advisory: libpng security update Red Hat Security Advisories (RHSA) · Oct 16, 2026
- RHSA-2026:0125 Red Hat Security Advisory: mingw-libpng security update Red Hat Security Advisories (RHSA) · Oct 16, 2026
- WID-SEC-2025-2737 libpng: Schwachstelle ermöglicht Denial of Service und Offenlegung von Informationen BSI CERT-Bund (WID) · Sep 15, 2026
- SUSE-SU-2026:23514-1 Security update for libpng16 SUSE / openSUSE Security Updates · Sep 15, 2026
- SUSE-SU-2026:23063-1 Security update for libpng16 SUSE / openSUSE Security Updates · Aug 12, 2026
- WID-SEC-2026-1730 Xerox FreeFlow Print Server: Mehrere Schwachstellen ermöglichen nicht spezifizierten Angriff BSI CERT-Bund (WID) · Jul 16, 2026
- WID-SEC-2026-0778 Dell Secure Connect Gateway Policy Manager: Mehrere Schwachstellen BSI CERT-Bund (WID) · May 11, 2026
- USN-7963-1 libpng1.6 vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- openSUSE-SU-2026:20017-1 Security update for libpng16 SUSE / openSUSE Security Updates · Mar 23, 2026
- openSUSE-SU-2025:15801-1 libpng16-16-1.6.52-1.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2026:20073-1 Security update for libpng16 SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2026:20030-1 Security update for libpng16 SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:4494-1 Security update for libpng16 SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:21217-1 Security update for libpng16 SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:21220-1 Security update for libpng16 SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:4436-1 Security update for libpng16 SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2026:0085-1 Security update for libpng16 SUSE / openSUSE Security Updates · Feb 4, 2026
- RLSA-2026:0241 Important: libpng security update Rocky Linux Security Advisories · Jan 9, 2026
- RLSA-2026:0237 Important: libpng security update Rocky Linux Security Advisories · Jan 9, 2026
- RLSA-2026:0238 Important: libpng security update Rocky Linux Security Advisories · Jan 9, 2026
- ALAS2023-2025-1332 Important: libpng security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Jan 7, 2026
- ALAS2023-2025-1337 Important: firefox security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Jan 7, 2026
- RLSA-2026:0125 Important: mingw-libpng security update Rocky Linux Security Advisories · Jan 7, 2026
- ELSA-2026-0237 Important: libpng security update (Oracle Linux 10) Oracle Linux Security Advisories (ELSA) · Jan 7, 2026
- ELSA-2026-0238 Important: libpng security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Jan 7, 2026
- ELSA-2026-0241 Important: libpng security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Jan 7, 2026
- ELSA-2026-0125 Important: mingw-libpng security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Jan 7, 2026
- ALAS2-2025-3108 Important: thunderbird security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Jan 5, 2026