A flaw was found in libssh2 before 1.8.1 creating a vulnerability on the SSH client side. A server could send a multiple keyboard interactive response messages whose total length are greater than unsigned char max characters. This value is used by the SSH client as an index to copy memory causing in an out of bounds memory write error.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade libssh2 | Mar 25, 2019 | Mar 25, 2019 |
| Amazon Linux Ami 2 | — | Upgrade libssh2-docsUpgrade libssh2-debuginfoUpgrade libssh2-develUpgrade libssh2 | Apr 27, 2020 | Mar 25, 2019 |
| Amazon_linux | — | Upgrade libssh2 | Aug 13, 2019 | Mar 19, 2019 |
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | Mar 25, 2019 |
| Centos_linux | — | Upgrade perl-Sys-GuestfsUpgrade supermin-debuginfoUpgrade libguestfs-gobject-develUpgrade libvirt-dbus-debuginfoUpgrade virt-dib-debuginfoUpgrade libguestfs-gobject-debuginfoUpgrade libvirt-daemon-driver-nodedevUpgrade libguestfs-debuginfoUpgrade nbdkit-debuginfoUpgrade libvirtUpgrade libssh2-debuginfoUpgrade libvirt-daemon-driver-interface-debuginfoUpgrade netcfUpgrade libvirt-daemonUpgrade nbdkit-plugin-vddk-debuginfoUpgrade qemu-guest-agentUpgrade libvirt-daemon-driver-storage-disk-debuginfoUpgrade libvirt-debugsourceUpgrade python3-libguestfsUpgrade python3-libvirtUpgrade libvirt-daemon-driver-networkUpgrade perl-Sys-Guestfs-debuginfoUpgrade libvirt-daemon-driver-storage-gluster-debuginfoUpgrade python3-libvirt-debuginfoUpgrade libvirt-daemon-driver-storage-scsi-debuginfoUpgrade qemu-kvm-common-debuginfoUpgrade nbdkit-develUpgrade libiscsi-utilsUpgrade nbdkit-plugin-gzipUpgrade libssh2-develUpgrade libvirt-daemon-driver-storage-mpathUpgrade libguestfs-inspect-iconsUpgrade libvirt-client-debuginfoUpgrade libguestfs-winsupportUpgrade libguestfs-tools-cUpgrade nbdkit-plugin-python3Upgrade libvirt-bash-completionUpgrade python3-hivexUpgrade libvirt-daemon-driver-secret-debuginfoUpgrade qemu-kvm-block-sshUpgrade libguestfs-man-pages-ukUpgrade libvirt-daemon-driver-storage-iscsi-debuginfoUpgrade qemu-guest-agent-debuginfoUpgrade qemu-kvmUpgrade hivex-develUpgrade libvirt-clientUpgrade libguestfs-rsyncUpgrade qemu-kvm-block-rbdUpgrade nbdkit-bash-completionUpgrade netcf-libs-debuginfoUpgrade qemu-kvm-block-curlUpgrade qemu-kvm-block-curl-debuginfoUpgrade libiscsi-utils-debuginfoUpgrade libguestfs-gobjectUpgrade libguestfs-man-pages-jaUpgrade libguestfs-benchmarking-debuginfoUpgrade perl-hivex-debuginfoUpgrade libvirt-develUpgrade libvirt-daemon-driver-storage-glusterUpgrade qemu-kvm-block-glusterUpgrade nbdkit-example-pluginsUpgrade qemu-img-debuginfoUpgrade libvirt-daemon-driver-storage-mpath-debuginfoUpgrade python3-libguestfs-debuginfoUpgrade libvirt-daemon-driver-storage-coreUpgrade ruby-libguestfs-debuginfoUpgrade python3-hivex-debuginfoUpgrade libvirt-libs-debuginfoUpgrade nbdkit-basic-plugins-debuginfoUpgrade libiscsiUpgrade libguestfs-benchmarkingUpgrade qemu-kvm-block-iscsiUpgrade libguestfs-rescueUpgrade libvirt-lock-sanlockUpgrade libguestfsUpgrade libvirt-adminUpgrade nbdkit-plugin-python-commonUpgrade lua-guestfs-debuginfoUpgrade libguestfs-bash-completionUpgrade qemu-kvm-block-ssh-debuginfoUpgrade perl-Sys-Virt-debugsourceUpgrade libssh2-debugsourceUpgrade libvirt-daemon-driver-nodedev-debuginfoUpgrade libvirt-docsUpgrade libvirt-debuginfoUpgrade virt-p2v-makerUpgrade libiscsi-debuginfoUpgrade libvirt-lock-sanlock-debuginfoUpgrade libguestfs-tools-c-debuginfoUpgrade qemu-kvm-block-iscsi-debuginfoUpgrade hivexUpgrade libguestfs-java-debuginfoUpgrade hivex-debuginfoUpgrade libguestfs-javaUpgrade nbdkit-plugin-xz-debuginfoUpgrade libvirt-daemon-config-nwfilterUpgrade perl-Sys-Virt-debuginfoUpgrade ruby-hivexUpgrade libvirt-dbusUpgrade libvirt-daemon-debuginfoUpgrade libguestfs-gfs2Upgrade libvirt-libsUpgrade libvirt-daemon-driver-storage-logicalUpgrade qemu-kvm-block-rbd-debuginfoUpgrade netcf-debuginfoUpgrade nbdkit-basic-pluginsUpgrade nbdkitUpgrade qemu-kvm-commonUpgrade seavgabios-binUpgrade nbdkit-plugin-vddkUpgrade nbdkit-plugin-gzip-debuginfoUpgrade sgabiosUpgrade supermin-debugsourceUpgrade libguestfs-java-develUpgrade libguestfs-xfsUpgrade libvirt-daemon-driver-storage-scsiUpgrade libvirt-daemon-config-networkUpgrade libiscsi-debugsourceUpgrade libvirt-daemon-driver-storage-core-debuginfoUpgrade libguestfs-toolsUpgrade libvirt-daemon-driver-storage-iscsiUpgrade qemu-kvm-block-gluster-debuginfoUpgrade libvirt-nss-debuginfoUpgrade libvirt-daemon-driver-nwfilter-debuginfoUpgrade ruby-hivex-debuginfoUpgrade hivex-debugsourceUpgrade libvirt-daemon-driver-storage-diskUpgrade libiscsi-develUpgrade libguestfs-javadocUpgrade qemu-kvm-debuginfoUpgrade libvirt-daemon-driver-storageUpgrade supermin-develUpgrade seabios-binUpgrade qemu-imgUpgrade qemu-kvm-core-debuginfoUpgrade qemu-kvm-debugsourceUpgrade ruby-libguestfsUpgrade nbdkit-plugin-xzUpgrade libguestfs-debugsourceUpgrade libvirt-daemon-driver-qemuUpgrade superminUpgrade virt-v2v-debuginfoUpgrade libvirt-admin-debuginfoUpgrade qemu-kvm-coreUpgrade libvirt-daemon-driver-storage-rbdUpgrade netcf-develUpgrade nbdkit-plugin-python3-debuginfoUpgrade libvirt-daemon-kvmUpgrade libvirt-dbus-debugsourceUpgrade sgabios-binUpgrade libvirt-daemon-driver-interfaceUpgrade libvirt-daemon-driver-qemu-debuginfoUpgrade perl-Sys-VirtUpgrade virt-v2vUpgrade seabiosUpgrade perl-hivexUpgrade netcf-libsUpgrade nbdkit-debugsourceUpgrade libvirt-daemon-driver-storage-rbd-debuginfoUpgrade libvirt-nssUpgrade libvirt-daemon-driver-storage-logical-debuginfoUpgrade libvirt-daemon-driver-nwfilterUpgrade libvirt-daemon-driver-network-debuginfoUpgrade lua-guestfsUpgrade libssh2Upgrade nbdkit-example-plugins-debuginfoUpgrade libvirt-daemon-driver-secretUpgrade libguestfs-develUpgrade virt-dibUpgrade netcf-debugsourceUpgrade libssh2-docs | Apr 3, 2019 | Mar 19, 2019 |
| Debian | — | Upgrade libssh2 | Mar 27, 2019 | Mar 25, 2019 |
| F5 Big Ip | — | Update F5 BIG-IP to the latest version | Jun 17, 2026 | Sep 18, 2020 |
| Freebsd | — | Upgrade linux-c6-libssh2Upgrade linux-c7-libssh2Upgrade libssh2 | Jul 8, 2019 | Apr 18, 2019 |
| Huawei Euleros 2_0_sp2 | — | Upgrade libssh2 | May 1, 2019 | Mar 25, 2019 |
| Huawei Euleros 2_0_sp3 | — | Upgrade libssh2 | May 1, 2019 | Mar 25, 2019 |
| Huawei Euleros 2_0_sp5 | — | Upgrade libssh2 | May 1, 2019 | Mar 25, 2019 |
| Oracle Solaris | — | Upgrade library/libssh2 to version 1.8.2-11.4.11.0.1.1.0 on Solaris 11.4 | Jul 17, 2019 | Mar 25, 2019 |
| Oracle_linux | — | Upgrade libguestfs-javadocUpgrade libvirt-daemon-driver-storage-iscsiUpgrade perl-Sys-VirtUpgrade libvirt-adminUpgrade libguestfs-inspect-iconsUpgrade sgabiosUpgrade qemu-kvm-block-curlUpgrade libguestfs-xfsUpgrade libvirt-daemon-driver-storage-rbdUpgrade libvirt-daemon-kvmUpgrade libvirt-daemon-driver-storage-scsiUpgrade qemu-kvm-block-glusterUpgrade perl-hivexUpgrade libvirt-develUpgrade python3-libvirtUpgrade libvirt-nssUpgrade libvirt-daemon-driver-nwfilterUpgrade nbdkit-example-pluginsUpgrade nbdkit-plugin-vddkUpgrade libvirt-daemon-driver-secretUpgrade libguestfs-gfs2Upgrade hivex-develUpgrade libvirt-daemon-driver-interfaceUpgrade nbdkit-plugin-python3Upgrade seabios-binUpgrade libssh2Upgrade ruby-hivexUpgrade libvirt-daemon-config-networkUpgrade libvirt-daemon-driver-qemuUpgrade libvirt-dbusUpgrade libvirt-docsUpgrade lua-guestfsUpgrade libguestfs-toolsUpgrade libguestfs-bash-completionUpgrade libvirt-clientUpgrade libssh2-docsUpgrade qemu-kvm-commonUpgrade netcf-libsUpgrade libvirt-libsUpgrade libiscsi-develUpgrade superminUpgrade libguestfs-rescueUpgrade libvirt-daemon-driver-storageUpgrade nbdkit-plugin-xzUpgrade libguestfs-man-pages-ukUpgrade virt-p2v-makerUpgrade python3-libguestfsUpgrade supermin-develUpgrade python3-hivexUpgrade virt-dibUpgrade libvirt-daemonUpgrade libvirt-daemon-driver-networkUpgrade netcfUpgrade virt-v2vUpgrade seabiosUpgrade seavgabios-binUpgrade libguestfs-java-develUpgrade nbdkit-basic-pluginsUpgrade qemu-kvm-block-rbdUpgrade libvirtUpgrade libvirt-lock-sanlockUpgrade libguestfs-javaUpgrade sgabios-binUpgrade libvirt-daemon-driver-storage-logicalUpgrade hivexUpgrade qemu-guest-agentUpgrade libguestfs-benchmarkingUpgrade libguestfs-tools-cUpgrade qemu-kvm-block-iscsiUpgrade libguestfs-man-pages-jaUpgrade nbdkit-plugin-gzipUpgrade libvirt-daemon-driver-storage-glusterUpgrade libvirt-bash-completionUpgrade ruby-libguestfsUpgrade libguestfs-winsupportUpgrade libguestfs-develUpgrade libssh2-develUpgrade libguestfsUpgrade nbdkit-plugin-python-commonUpgrade libvirt-daemon-driver-nodedevUpgrade qemu-kvmUpgrade libguestfs-rsyncUpgrade qemu-imgUpgrade libvirt-daemon-driver-storage-mpathUpgrade libiscsi-utilsUpgrade perl-Sys-GuestfsUpgrade nbdkitUpgrade netcf-develUpgrade libvirt-daemon-driver-storage-coreUpgrade nbdkit-bash-completionUpgrade qemu-kvm-block-sshUpgrade nbdkit-develUpgrade libguestfs-gobjectUpgrade libvirt-daemon-driver-storage-diskUpgrade qemu-kvm-coreUpgrade libguestfs-gobject-develUpgrade libvirt-daemon-config-nwfilterUpgrade libiscsi | Jul 3, 2019 | Mar 13, 2019 |
| Redhat_linux | — | Upgrade libvirt-daemon-driver-storage-logicalUpgrade nbdkit-plugin-python3-debuginfoUpgrade seabiosUpgrade python3-libguestfsUpgrade libiscsi-debugsourceUpgrade nbdkit-plugin-gzip-debuginfoUpgrade libvirt-daemon-driver-networkUpgrade libguestfs-inspect-iconsUpgrade hivexUpgrade libvirt-lock-sanlock-debuginfoUpgrade virt-v2v-debuginfoUpgrade perl-hivexUpgrade libguestfs-bash-completionUpgrade libiscsiUpgrade nbdkit-develUpgrade seavgabios-binUpgrade qemu-img-debuginfoUpgrade libvirt-daemon-driver-qemuUpgrade netcf-libs-debuginfoUpgrade supermin-debugsourceUpgrade libvirt-daemon-driver-network-debuginfoUpgrade libiscsi-debuginfoUpgrade qemu-kvm-block-glusterUpgrade qemu-kvm-block-rbdUpgrade libguestfs-gobject-debuginfoUpgrade libvirt-daemon-driver-storage-scsiUpgrade libvirt-daemon-driver-storage-core-debuginfoUpgrade libguestfs-toolsUpgrade qemu-guest-agent-debuginfoUpgrade perl-Sys-Guestfs-debuginfoUpgrade libguestfs-benchmarking-debuginfoUpgrade sgabiosUpgrade nbdkit-basic-pluginsUpgrade qemu-kvm-coreUpgrade libvirtUpgrade libvirt-lock-sanlockUpgrade libvirt-daemon-driver-secret-debuginfoUpgrade ruby-hivex-debuginfoUpgrade nbdkit-plugin-python-commonUpgrade libvirt-nss-debuginfoUpgrade lua-guestfs-debuginfoUpgrade libvirt-daemon-driver-storage-disk-debuginfoUpgrade libvirt-docsUpgrade libvirt-daemon-driver-storage-coreUpgrade qemu-kvm-block-ssh-debuginfoUpgrade libvirt-daemon-driver-nodedevUpgrade python3-hivexUpgrade nbdkit-debugsourceUpgrade libvirt-debugsourceUpgrade lua-guestfsUpgrade qemu-kvm-core-debuginfoUpgrade superminUpgrade libvirt-daemon-driver-nwfilter-debuginfoUpgrade libvirt-dbus-debuginfoUpgrade libguestfs-rescueUpgrade libvirt-daemon-driver-interface-debuginfoUpgrade hivex-debugsourceUpgrade perl-Sys-GuestfsUpgrade ruby-hivexUpgrade virt-dib-debuginfoUpgrade libvirt-daemon-driver-nodedev-debuginfoUpgrade libssh2-docsUpgrade libguestfs-gobjectUpgrade ruby-libguestfsUpgrade libvirt-libsUpgrade libiscsi-utils-debuginfoUpgrade netcf-develUpgrade nbdkit-plugin-gzipUpgrade libvirt-debuginfoUpgrade perl-hivex-debuginfoUpgrade libvirt-nssUpgrade qemu-kvm-block-sshUpgrade libvirt-daemon-driver-storage-scsi-debuginfoUpgrade supermin-debuginfoUpgrade nbdkit-plugin-xz-debuginfoUpgrade qemu-kvm-common-debuginfoUpgrade qemu-imgUpgrade libvirt-daemon-driver-storage-gluster-debuginfoUpgrade libguestfs-man-pages-ukUpgrade libvirt-daemon-driver-storage-rbd-debuginfoUpgrade libvirt-daemon-driver-interfaceUpgrade libguestfs-gobject-develUpgrade python3-hivex-debuginfoUpgrade libvirt-daemon-kvmUpgrade nbdkit-debuginfoUpgrade qemu-kvm-block-curlUpgrade sgabios-binUpgrade libvirt-dbus-debugsourceUpgrade libvirt-daemon-debuginfoUpgrade libvirt-daemonUpgrade perl-Sys-Virt-debuginfoUpgrade libguestfs-javadocUpgrade virt-p2v-makerUpgrade qemu-kvm-debuginfoUpgrade qemu-kvm-block-curl-debuginfoUpgrade libvirt-daemon-driver-storage-mpath-debuginfoUpgrade libguestfs-debuginfoUpgrade libvirt-daemon-config-nwfilterUpgrade qemu-kvmUpgrade libvirt-admin-debuginfoUpgrade libvirt-libs-debuginfoUpgrade nbdkit-plugin-python3Upgrade libssh2Upgrade nbdkit-example-pluginsUpgrade libguestfsUpgrade libvirt-daemon-driver-storage-mpathUpgrade libguestfs-java-debuginfoUpgrade libvirt-dbusUpgrade libvirt-daemon-driver-storage-rbdUpgrade SLOFUpgrade nbdkit-bash-completionUpgrade nbdkit-basic-plugins-debuginfoUpgrade nbdkit-example-plugins-debuginfoUpgrade virt-v2vUpgrade virt-dibUpgrade nbdkitUpgrade libiscsi-utilsUpgrade libvirt-daemon-config-networkUpgrade qemu-kvm-block-iscsi-debuginfoUpgrade libssh2-debuginfoUpgrade qemu-guest-agentUpgrade libguestfs-rsyncUpgrade libvirt-daemon-driver-secretUpgrade python3-libguestfs-debuginfoUpgrade perl-Sys-VirtUpgrade python3-libvirt-debuginfoUpgrade supermin-develUpgrade netcf-libsUpgrade nbdkit-plugin-vddkUpgrade libvirt-adminUpgrade libvirt-daemon-driver-storage-logical-debuginfoUpgrade libvirt-bash-completionUpgrade libvirt-daemon-driver-qemu-debuginfoUpgrade libvirt-client-debuginfoUpgrade libvirt-clientUpgrade libssh2-develUpgrade libguestfs-java-develUpgrade libguestfs-man-pages-jaUpgrade nbdkit-plugin-vddk-debuginfoUpgrade netcf-debuginfoUpgrade perl-Sys-Virt-debugsourceUpgrade libvirt-daemon-driver-nwfilterUpgrade libguestfs-gfs2Upgrade libguestfs-javaUpgrade qemu-kvm-commonUpgrade libguestfs-tools-c-debuginfoUpgrade libguestfs-xfsUpgrade libiscsi-develUpgrade libguestfs-develUpgrade libvirt-daemon-driver-storage-glusterUpgrade libvirt-daemon-driver-storageUpgrade hivex-develUpgrade nbdkit-plugin-xzUpgrade python3-libvirtUpgrade seabios-binUpgrade libguestfs-winsupportUpgrade qemu-kvm-block-iscsiUpgrade libguestfs-tools-cUpgrade libvirt-daemon-driver-storage-iscsiUpgrade netcf-debugsourceUpgrade libguestfs-benchmarkingUpgrade hivex-debuginfoUpgrade libssh2-debugsourceUpgrade qemu-kvm-block-rbd-debuginfoUpgrade libvirt-develUpgrade libvirt-daemon-driver-storage-iscsi-debuginfoUpgrade qemu-kvm-block-gluster-debuginfoUpgrade libguestfs-debugsourceUpgrade ruby-libguestfs-debuginfoUpgrade qemu-kvm-debugsourceUpgrade netcfUpgrade libvirt-daemon-driver-storage-disk | Mar 29, 2019 | Mar 25, 2019 |
| Suse | — | Upgrade libssh2-1-x86Upgrade libssh2-develUpgrade libssh2-1Upgrade libssh2-1-32bit | Mar 20, 2019 | Mar 19, 2019 |
| Ubuntu | — | Upgrade libssh2-1 (Ubuntu Pro) | Mar 22, 2023 | Mar 25, 2019 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jan 20, 2025 | Mar 25, 2019 |
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