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Vulnerability record · CVE-2016-9842 · published 23 May 2017

CVE-2016-9842: Zlib vulnerability

Zlib · Zlib

The inflateMark function in inflate.c in zlib 1.2.8 might allow context-dependent attackers to have unspecified impact via vectors involving left shifts of negative integers.

8.8 CVSS 3.1 High EPSS 5.2% · top 7.8% CWE-1335 · CWE-1335
8.8CVSS 3.1 base score, v2 6.8
5.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
19Affected product versions listed by NVD
61References
14 Jul 2026Last modified by NVD

Description

The inflateMark function in inflate.c in zlib 1.2.8 might allow context-dependent attackers to have unspecified impact via vectors involving left shifts of negative integers.

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

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

References

LinkTags
http://lists.opensuse.org/opensuse-updates/2016-12/msg00127.html Broken Link
http://lists.opensuse.org/opensuse-updates/2017-01/msg00050.html Broken Link
http://lists.opensuse.org/opensuse-updates/2017-01/msg00053.html Broken Link
http://www.openwall.com/lists/oss-security/2016/12/05/21 Mailing ListPatch
http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html Third Party Advisory
http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html Third Party Advisory
http://www.securityfocus.com/bid/95131 Broken LinkThird Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1039427 Broken LinkThird Party AdvisoryVDB Entry
https://access.redhat.com/errata/RHSA-2017:1220 Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:1221 Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:1222 Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:2999 Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:3046 Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:3047 Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:3453 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1402348 Issue TrackingPatch
https://github.com/madler/zlib/commit/e54e1299404101a5a9d0cf5e45512b543967f958 Patch
https://lists.debian.org/debian-lts-announce/2019/03/msg00027.html Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/01/msg00030.html Mailing ListThird Party Advisory
https://security.gentoo.org/glsa/201701-56 Third Party Advisory
https://security.gentoo.org/glsa/202007-54 Third Party Advisory
https://support.apple.com/HT208112 Third Party Advisory
https://support.apple.com/HT208113 Third Party Advisory
https://support.apple.com/HT208115 Third Party Advisory
https://support.apple.com/HT208144 Third Party Advisory
https://usn.ubuntu.com/4246-1/ Third Party Advisory
https://usn.ubuntu.com/4292-1/ Third Party Advisory
https://wiki.mozilla.org/MOSS/Secure_Open_Source/Completed#zlib Third Party Advisory
https://wiki.mozilla.org/images/0/09/Zlib-report.pdf Third Party Advisory
https://www.oracle.com/security-alerts/cpujul2020.html Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2016-12/msg00127.html Broken Link
http://lists.opensuse.org/opensuse-updates/2017-01/msg00050.html Broken Link
http://lists.opensuse.org/opensuse-updates/2017-01/msg00053.html Broken Link
http://www.openwall.com/lists/oss-security/2016/12/05/21 Mailing ListPatch
http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html Third Party Advisory
http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html Third Party Advisory
http://www.securityfocus.com/bid/95131 Broken LinkThird Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1039427 Broken LinkThird Party AdvisoryVDB Entry
https://access.redhat.com/errata/RHSA-2017:1220 Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:1221 Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2016-9842), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.