Integer underflow in the _gdContributionsAlloc function in gd_interpolation.c in the GD Graphics Library (aka libgd) before 2.2.4 allows remote attackers to have unspecified impact via vectors related to decrementing the u variable.
http://libgd.github.io/release-2.2.4.html
http://www.debian.org/security/2017/dsa-3777
http://www.openwall.com/lists/oss-security/2017/01/26/1
http://www.openwall.com/lists/oss-security/2017/01/28/6
http://www.securityfocus.com/bid/95869
https://access.redhat.com/errata/RHSA-2019:2519
https://access.redhat.com/errata/RHSA-2019:3299
https://github.com/libgd/libgd/commit/60bfb401ad5a4a8ae995dcd36372fe15c71e1a35
Source: MITRE
Published: 2017-03-15
Updated: 2017-11-04
Type: CWE-191
Base Score: 7.5
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P
Impact Score: 6.4
Exploitability Score: 10
Severity: HIGH
Base Score: 9.8
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Impact Score: 5.9
Exploitability Score: 3.9
Severity: CRITICAL