The xsltAddTextString function in transform.c in libxslt 1.1.29, as used in Blink in Google Chrome prior to 57.0.2987.98 for Mac, Windows, and Linux and 57.0.2987.108 for Android, lacked a check for integer overflow during a size calculation, which allowed a remote attacker to perform an out of bounds memory write via a crafted HTML page.
https://github.com/advisories/GHSA-pf6m-fxpq-fg8v
https://git.gnome.org/browse/libxslt/commit/?id=08ab2774b870de1c7b5a48693df75e8154addae5
https://euvd.enisa.europa.eu/vulnerability/EUVD-2018-0301
https://chromereleases.googleblog.com/2017/03/stable-channel-update-for-desktop.html