CVE catalog

CVE-2016-6912

libgd2: CVE-2016-6912

Severity: Critical · CVSS 9.8CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published: Aug 16, 2016, 12:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 4.49% · Oct 25, 2026

Double free vulnerability in the gdImageWebPtr function in the GD Graphics Library (aka libgd) before 2.2.4 allows remote attackers to have unspecified impact via large width and height values.

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	libgd2	sid	`2.3.3-14`	fixed
Debian	libgd2	forky	`2.3.3-14`	fixed
Debian	libgd2	trixie	`2.3.3-14~deb13u1`	fixed
Debian	libgd2	trixie-security	`2.3.3-14~deb13u1`	fixed
Debian	libgd2	bookworm	`2.3.3-9`	fixed
Debian	libgd2	bookworm-security	`2.3.3-9+deb12u1`	fixed
Alpine	gd	3.3	`2.2.4-r0`	fixed
Alpine	gd	3.4	`2.2.4-r0`	fixed
Alpine	gd	3.5	`2.2.4-r0`	fixed
Ubuntu	libgd2	14.04	`2.1.0-2`	vulnerable
Ubuntu	libgd2	14.04	`2.1.0-3`	vulnerable
Ubuntu	libgd2	14.04	`2.1.0-3ubuntu0.1`	vulnerable
Ubuntu	libgd2	14.04	`2.1.0-3ubuntu0.2`	vulnerable
Ubuntu	libgd2	14.04	`2.1.0-3ubuntu0.3`	vulnerable
Ubuntu	libgd2	14.04	`2.1.0-3ubuntu0.5`	vulnerable
Ubuntu	libgd2	14.04	`2.1.0-3ubuntu0.6`	fixed
Ubuntu	libgd2	16.04	`2.1.1-4build1`	vulnerable
Ubuntu	libgd2	16.04	`2.1.1-4build2`	vulnerable
Ubuntu	libgd2	16.04	`2.1.1-4ubuntu0.16.04.1`	vulnerable
Ubuntu	libgd2	16.04	`2.1.1-4ubuntu0.16.04.2`	vulnerable
Ubuntu	libgd2	16.04	`2.1.1-4ubuntu0.16.04.3`	vulnerable
Ubuntu	libgd2	16.04	`2.1.1-4ubuntu0.16.04.5`	vulnerable
Ubuntu	libgd2	16.04	`2.1.1-4ubuntu0.16.04.6`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	libgd2	source	sid	`2.2.4-1`	not yet assigned	Not reported	Not reported
Debian	libgd2	source	forky	`2.2.4-1`	not yet assigned	Not reported	Not reported
Debian	libgd2	source	trixie	`2.2.4-1`	not yet assigned	Not reported	Not reported
Debian	libgd2	source	bookworm	`2.2.4-1`	not yet assigned	Not reported	Not reported
Alpine	gd	apk	3.3	`2.2.4-r0`	Not reported	ALPINE-CVE-2016-6912	Not reported
Alpine	gd	apk	3.4	`2.2.4-r0`	Not reported	ALPINE-CVE-2016-6912	Not reported
Alpine	gd	apk	3.5	`2.2.4-r0`	Not reported	ALPINE-CVE-2016-6912	Not reported
Ubuntu	libgd2	deb	14.04	`2.1.0-3ubuntu0.6`	Not reported	UBUNTU-CVE-2016-6912	Not reported
Ubuntu	libgd2	deb	16.04	`2.1.1-4ubuntu0.16.04.6`	Not reported	UBUNTU-CVE-2016-6912	Not reported

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

[Debian 12 (Bookworm)]

[libgd3]Unknown
Source package: [libgd2]
Details (4)
- 2.3.3-9 · amd64 · bookworm
  Fixed · Fixed: 2.2.4-1
  dsa · libgd2 · debian · bookworm; dsa · libgd2 · debian · 12
- 2.3.3-9 · arm64 · bookworm
  Fixed · Fixed: 2.2.4-1
  dsa · libgd2 · debian · bookworm; dsa · libgd2 · debian · 12
- 2.3.3-9+deb12u1 · amd64 · bookworm-security
  Fixed · Fixed: 2.2.4-1
  dsa · libgd2 · debian · bookworm; dsa · libgd2 · debian · 12
- 2.3.3-9+deb12u1 · arm64 · bookworm-security
  Fixed · Fixed: 2.2.4-1
  dsa · libgd2 · debian · bookworm; dsa · libgd2 · debian · 12
[libgd-dev]Unknown
Source package: [libgd2]
Details (4)
- 2.3.3-9 · amd64 · bookworm
  Fixed · Fixed: 2.2.4-1
  dsa · libgd2 · debian · bookworm; dsa · libgd2 · debian · 12
- 2.3.3-9 · arm64 · bookworm
  Fixed · Fixed: 2.2.4-1
  dsa · libgd2 · debian · bookworm; dsa · libgd2 · debian · 12
- 2.3.3-9+deb12u1 · amd64 · bookworm-security
  Fixed · Fixed: 2.2.4-1
  dsa · libgd2 · debian · bookworm; dsa · libgd2 · debian · 12
- 2.3.3-9+deb12u1 · arm64 · bookworm-security
  Fixed · Fixed: 2.2.4-1
  dsa · libgd2 · debian · bookworm; dsa · libgd2 · debian · 12
[libgd-tools]Unknown
Source package: [libgd2]
Details (4)
- 2.3.3-9 · amd64 · bookworm
  Fixed · Fixed: 2.2.4-1
  dsa · libgd2 · debian · bookworm; dsa · libgd2 · debian · 12
- 2.3.3-9 · arm64 · bookworm
  Fixed · Fixed: 2.2.4-1
  dsa · libgd2 · debian · bookworm; dsa · libgd2 · debian · 12
- 2.3.3-9+deb12u1 · amd64 · bookworm-security
  Fixed · Fixed: 2.2.4-1
  dsa · libgd2 · debian · bookworm; dsa · libgd2 · debian · 12
- 2.3.3-9+deb12u1 · arm64 · bookworm-security
  Fixed · Fixed: 2.2.4-1
  dsa · libgd2 · debian · bookworm; dsa · libgd2 · debian · 12

[Debian 13 (Trixie)]

[libgd3]Unknown
Source package: [libgd2]
Details (4)
- 2.3.3-13 · amd64 · trixie
  Fixed · Fixed: 2.2.4-1
  dsa · libgd2 · debian · 13
- 2.3.3-13 · arm64 · trixie
  Fixed · Fixed: 2.2.4-1
  dsa · libgd2 · debian · 13
- 2.3.3-14~deb13u1 · amd64 · trixie-security
  Fixed · Fixed: 2.2.4-1
  dsa · libgd2 · debian · 13
- 2.3.3-14~deb13u1 · arm64 · trixie-security
  Fixed · Fixed: 2.2.4-1
  dsa · libgd2 · debian · 13
[libgd-dev]Unknown
Source package: [libgd2]
Details (4)
- 2.3.3-13 · amd64 · trixie
  Fixed · Fixed: 2.2.4-1
  dsa · libgd2 · debian · 13
- 2.3.3-13 · arm64 · trixie
  Fixed · Fixed: 2.2.4-1
  dsa · libgd2 · debian · 13
- 2.3.3-14~deb13u1 · amd64 · trixie-security
  Fixed · Fixed: 2.2.4-1
  dsa · libgd2 · debian · 13
- 2.3.3-14~deb13u1 · arm64 · trixie-security
  Fixed · Fixed: 2.2.4-1
  dsa · libgd2 · debian · 13
[libgd-tools]Unknown
Source package: [libgd2]
Details (4)
- 2.3.3-13 · amd64 · trixie
  Fixed · Fixed: 2.2.4-1
  dsa · libgd2 · debian · 13
- 2.3.3-13 · arm64 · trixie
  Fixed · Fixed: 2.2.4-1
  dsa · libgd2 · debian · 13
- 2.3.3-14~deb13u1 · amd64 · trixie-security
  Fixed · Fixed: 2.2.4-1
  dsa · libgd2 · debian · 13
- 2.3.3-14~deb13u1 · arm64 · trixie-security
  Fixed · Fixed: 2.2.4-1
  dsa · libgd2 · debian · 13

Observed: Oct 23, 2026, 5:22:56 PM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]