The PageCaptureSaveAsMHTMLFunction::ReturnFailure function in browser/extensions/api/page_capture/page_capture_api.cc in Google Chrome before 49.0.2623.108 allows attackers to cause a denial of service or possibly have unspecified other impact by triggering an error in creating an MHTML document.
https://security.gentoo.org/glsa/201605-02
https://codereview.chromium.org/1761303003/
https://code.google.com/p/chromium/issues/detail?id=597518
https://bugs.chromium.org/p/chromium/issues/detail?id=401364
http://www.securitytracker.com/id/1035423
http://www.debian.org/security/2016/dsa-3531
http://rhn.redhat.com/errata/RHSA-2016-0525.html
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00039.html
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00001.html
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00000.html
http://googlechromereleases.blogspot.com/2016/03/stable-channel-update_24.html