png_image_free in png.c in libpng 1.6.x before 1.6.37 has a use-after-free because png_image_free_function is called under png_safe_execute.Referenceshttps://seclists.org/bugtraq/2019/Apr/30https://www.debian.org/security/2019/dsa-4435https://seclists.org/bugtraq/2019/Apr/36https://usn.ubuntu.com/3962-1/https://usn.ubuntu.com/3991-1/https://seclists.org/bugtraq/2019/May/56https://seclists.org/bugtraq/2019/May/59https://www.debian.org/security/2019/dsa-4448https://lists.debian.org/debian-lts-announce/2019/05/msg00032.htmlhttps://access.redhat.com/errata/RHSA-2019:1265https://access.redhat.com/errata/RHSA-2019:1267https://access.redhat.com/errata/RHSA-2019:1269https://www.debian.org/security/2019/dsa-4451https://seclists.org/bugtraq/2019/May/67https://lists.debian.org/debian-lts-announce/2019/05/msg00038.htmlhttps://usn.ubuntu.com/3997-1/http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00002.htmlhttps://access.redhat.com/errata/RHSA-2019:1310https://access.redhat.com/errata/RHSA-2019:1308https://access.redhat.com/errata/RHSA-2019:1309http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00029.htmlhttp://lists.opensuse.org/opensuse-security-announce/2019-06/msg00084.htmlhttp://www.securityfocus.com/bid/108098https://usn.ubuntu.com/4080-1/https://usn.ubuntu.com/4083-1/https://security.gentoo.org/glsa/201908-02https://access.redhat.com/errata/RHSA-2019:2494https://access.redhat.com/errata/RHSA-2019:2495http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00038.htmlhttp://lists.opensuse.org/opensuse-security-announce/2019-08/msg00044.htmlhttps://access.redhat.com/errata/RHSA-2019:2585https://access.redhat.com/errata/RHSA-2019:2590https://access.redhat.com/errata/RHSA-2019:2592https://access.redhat.com/errata/RHSA-2019:2737https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.htmlhttps://www.oracle.com/security-alerts/cpuApr2021.htmlhttps://bugs.chromium.org/p/oss-fuzz/issues/detail?id=12803https://github.com/glennrp/libpng/issues/275http://packetstormsecurity.com/files/152561/Slackware-Security-Advisory-libpng-Updates.htmlhttps://security.netapp.com/advisory/ntap-20190719-0005/https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbst03977en_ushttps://www.oracle.com/security-alerts/cpuoct2021.html