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Fencer Vulns
medium 5.5

CVE-2016-6911 json

The dynamicGetbuf function in the GD Graphics Library (aka libgd) before 2.2.4 allows remote attackers to cause a denial of service (out-of…

published 2017-01-26 9 y ago modified 2026-06-17 4 mo ago also EUVD-2016-7796

cvss
5.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.8%
EPSS 1.8% chance of exploitation in 30 days, percentile 78%
public exploits
0
none known

Summary

The dynamicGetbuf function in the GD Graphics Library (aka libgd) before 2.2.4 allows remote attackers to cause a denial of service (out-of-bounds read) via a crafted TIFF image.

Patch / fix

  • libgd2 Debian 14, Debian 13, Debian 12 2.2.3-87-gd0fec80-2

debian advisories DEBIAN-CVE-2016-6911

  • libgd2 Ubuntu 14.04 LTS 2.1.0-3ubuntu0.5
  • libgd2 Ubuntu 16.04 LTS 2.1.1-4ubuntu0.16.04.5

ubuntu advisories UBUNTU-CVE-2016-6911

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • php5 SLE Software Development Kit 12 SP1, SLE Module for Web and Scripting 12 5.5.14-83.1
  • php7 SLE Software Development Kit 12 SP1, SLE Module for Web and Scripting 12 7.0.7-20.1
  • php53 SLES for SAP 11 SP4, SLES 11 SP4, SLE Software Development Kit 11 SP4 5.3.17-87.1
  • gd SLES for SAP 12 SP1, SLES 12 SP1, SLED 12 SP1 +2 more 2.1.0-17.1
  • gd SLES for SAP 11 SP4, SLES 11 SP4, SLE Software Development Kit 11 SP4 2.0.36.RC1-52.25.1

suse advisories SUSE-SU-2016:2766-1SUSE-SU-2016:2683-1SUSE-SU-2016:2683-2SUSE-SU-2016:2681-1SUSE-SU-2016:2668-1SUSE-SU-2016:2670-1

  • php Arch Linux 7.0.13-1

arch linux advisories AVG-58

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2016-6911 updated cvss 5.3

php: Missing check for OOB read in dynamicGetbuf()

  • Red Hat Enterprise Linux 5 gd, php, php53 Red Hat Enterprise Linux 6 gd, php, php-gd, php-cli, php-dba, php-fpm, +22 more Red Hat Enterprise Linux 7 gd, php, php-gd, php-cli, php-dba, php-fpm, +20 more Red Hat OpenShift Enterprise 2 gd, php Red Hat Software Collections php54-php, php55-php, php54-php-gd, php55-php-gd, rh-php56-php, rh-php70-php, +102 more
    affected: no fix planned “Will not fix”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.76% chance of exploitation in the next 30 days, higher than 78% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.0 5.5 CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.