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Vulnerability record · CVE-2015-8540 · published 14 April 2016

CVE-2015-8540: Redhat enterprise linux desktop supplementary vulnerability

Redhat · Enterprise Linux Desktop Supplementary

Integer underflow in the png_check_keyword function in pngwutil.c in libpng 0.90 through 0.99, 1.0.x before 1.0.66, 1.1.x and 1.2.x before 1.2.56, 1.3.x and 1.4.x before 1.4.19, and 1.5.x before 1.5.26 allows remote attackers to have unspecified impact via a space character as a keyword in a PNG image, which triggers an out-of-bounds read.

8.8 CVSS 3.0 High EPSS 6.5% · top 6.5% CWE-189 · CWE-189
8.8CVSS 3.0 base score, v2 9.3
6.5%EPSS exploitation probability, 30 days
NoNot in CISA KEV
7Affected product versions listed by NVD
38References
17 Jun 2026Last modified by NVD

Description

Integer underflow in the png_check_keyword function in pngwutil.c in libpng 0.90 through 0.99, 1.0.x before 1.0.66, 1.1.x and 1.2.x before 1.2.56, 1.3.x and 1.4.x before 1.4.19, and 1.5.x before 1.5.26 allows remote attackers to have unspecified impact via a space character as a keyword in a PNG image, which triggers an out-of-bounds read.

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

7 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://lists.fedoraproject.org/pipermail/package-announce/2015-December/174435.html
http://sourceforge.net/p/libpng/bugs/244/
http://sourceforge.net/p/libpng/code/ci/d9006f683c641793252d92254a75ae9b815b42ed/
http://sourceforge.net/projects/libpng/files/libpng10/1.0.66/ Patch
http://sourceforge.net/projects/libpng/files/libpng12/1.2.56/ Patch
http://sourceforge.net/projects/libpng/files/libpng14/1.4.19/ Patch
http://sourceforge.net/projects/libpng/files/libpng15/1.5.26/ Patch
http://www.debian.org/security/2016/dsa-3443
http://www.openwall.com/lists/oss-security/2015/12/10/6
http://www.openwall.com/lists/oss-security/2015/12/10/7
http://www.openwall.com/lists/oss-security/2015/12/11/1
http://www.openwall.com/lists/oss-security/2015/12/11/2
http://www.openwall.com/lists/oss-security/2015/12/17/10
http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.html
http://www.securityfocus.com/bid/80592
https://access.redhat.com/errata/RHSA-2016:1430
https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.ap
https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.ap
https://security.gentoo.org/glsa/201611-08
http://lists.fedoraproject.org/pipermail/package-announce/2015-December/174435.html
http://sourceforge.net/p/libpng/bugs/244/
http://sourceforge.net/p/libpng/code/ci/d9006f683c641793252d92254a75ae9b815b42ed/
http://sourceforge.net/projects/libpng/files/libpng10/1.0.66/ Patch
http://sourceforge.net/projects/libpng/files/libpng12/1.2.56/ Patch
http://sourceforge.net/projects/libpng/files/libpng14/1.4.19/ Patch
http://sourceforge.net/projects/libpng/files/libpng15/1.5.26/ Patch
http://www.debian.org/security/2016/dsa-3443
http://www.openwall.com/lists/oss-security/2015/12/10/6
http://www.openwall.com/lists/oss-security/2015/12/10/7
http://www.openwall.com/lists/oss-security/2015/12/11/1
http://www.openwall.com/lists/oss-security/2015/12/11/2
http://www.openwall.com/lists/oss-security/2015/12/17/10
http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.html
http://www.securityfocus.com/bid/80592
https://access.redhat.com/errata/RHSA-2016:1430
https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.ap
https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.ap
https://security.gentoo.org/glsa/201611-08

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Source: NIST National Vulnerability Database (record CVE-2015-8540), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.