Description
Integer overflow in the gdImageWebpCtx function in gd_webp.c in the GD Graphics Library (aka libgd) through 2.2.3, as used in PHP through 7.0.11, allows remote attackers to cause a denial of service (heap-based buffer overflow) or possibly have unspecified other impact via crafted imagewebp and imagedestroy calls.
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 | libgd2 | 2.2.3-87-gd0fec80-1 | — |
| Debian 13 | libgd2 | 2.2.3-87-gd0fec80-1 | — |
| Debian 12 | libgd2 | 2.2.3-87-gd0fec80-1 | — |
| Debian 8 | libgd2 | 2.1.0-5+deb8u7 | DSA-3693-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | libgd2 | 2.1.1-4ubuntu0.16.04.5 | USN-3117-1 |
| Ubuntu 14.04 LTS | libgd2 | 2.1.0-3ubuntu0.5 | USN-3117-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP1 | gd | 2.1.0-17.1 | SUSE-SU-2016:2668-1 |
| SLES 12 SP1 | php5 | 5.5.14-83.1 | SUSE-SU-2016:2766-1 |
| SLES 12 SP1 | php7 | 7.0.7-20.1 | SUSE-SU-2016:2683-1 |
| SLES 12 | php5 | 5.5.14-83.1 | SUSE-SU-2016:2766-1 |
| SLES 12 | php7 | 7.0.7-20.1 | SUSE-SU-2016:2683-2, SUSE-SU-2016:2683-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP1 | gd | 2.1.0-17.1 | SUSE-SU-2016:2668-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.4 | gd | 2.2.3-r1 | — |
Advisories 6
- USN-3117-1 libgd2 vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-3693-1 libgd2 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2016:2668-1 Security update for gd SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:2683-2 Security update for php7 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:2683-1 Security update for php7 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:2766-1 Security update for php5 SUSE / openSUSE Security Updates · May 2, 2025
References
- https://github.com/php/php-src/commit/c18263e0e0769faee96a5d0ee04b750c442783c6
- DSA-3693 vendor-advisory
- GLSA-201612-09 vendor-advisory
- https://bugs.php.net/bug.php?id=73003
- https://github.com/libgd/libgd/issues/308
- https://github.com/libgd/libgd/commit/40bec0f38f50e8510f5bb71a82f516d46facde03
- 93184 vdb-entry