Red Hat: CVE-2019-6454: Important: systemd security update (Multiple Advisories)
Description
An issue was discovered in sd-bus in systemd 239. bus_process_object() in libsystemd/sd-bus/bus-objects.c allocates a variable-length stack buffer for temporarily storing the object path of incoming D-Bus messages. An unprivileged local user can exploit this by sending a specially crafted message to PID1, causing the stack pointer to jump over the stack guard pages into an unmapped memory region and trigger a denial of service (systemd PID1 crash and kernel panic).
Solution(s)
- redhat-upgrade-libgudev1
- redhat-upgrade-libgudev1-devel
- redhat-upgrade-systemd
- redhat-upgrade-systemd-container
- redhat-upgrade-systemd-container-debuginfo
- redhat-upgrade-systemd-debuginfo
- redhat-upgrade-systemd-debugsource
- redhat-upgrade-systemd-devel
- redhat-upgrade-systemd-journal-gateway
- redhat-upgrade-systemd-journal-remote
- redhat-upgrade-systemd-journal-remote-debuginfo
- redhat-upgrade-systemd-libs
- redhat-upgrade-systemd-libs-debuginfo
- redhat-upgrade-systemd-networkd
- redhat-upgrade-systemd-pam
- redhat-upgrade-systemd-pam-debuginfo
- redhat-upgrade-systemd-python
- redhat-upgrade-systemd-resolved
- redhat-upgrade-systemd-sysv
- redhat-upgrade-systemd-tests
- redhat-upgrade-systemd-tests-debuginfo
- redhat-upgrade-systemd-udev
- redhat-upgrade-systemd-udev-debuginfo
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