CVE-2019-6454

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).

• CWE-787

• http://lists.opensuse.org/opensuse-security-announce/2019-02/msg00070.htmlThird Party Advisory
• http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00062.htmlMailing List, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2019/02/18/3Mailing List, Patch, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2019/02/19/1Mailing List, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2021/07/20/2Exploit, Mailing List, Third Party Advisory
• http://www.securityfocus.com/bid/107081Third Party Advisory, VDB Entry
• https://access.redhat.com/errata/RHSA-2019:0368Third Party Advisory
• https://access.redhat.com/errata/RHSA-2019:0990Third Party Advisory
• https://access.redhat.com/errata/RHSA-2019:1322Third Party Advisory
• https://access.redhat.com/errata/RHSA-2019:1502Third Party Advisory
• https://access.redhat.com/errata/RHSA-2019:2805Third Party Advisory
• https://github.com/systemd/systemd/commits/master/src/libsystemd/sd-bus/bus-objects.cPatch, Third Party Advisory
• https://kc.mcafee.com/corporate/index?page=content&id=SB10278Patch, Third Party Advisory
• https://lists.debian.org/debian-lts-announce/2019/02/msg00031.htmlMailing List, Third Party Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/N67IOBOTDOMVNQJ5QRU2MXLEECXPGNVJ/
• https://security.netapp.com/advisory/ntap-20190327-0004/Third Party Advisory
• https://usn.ubuntu.com/3891-1/Third Party Advisory
• https://www.debian.org/security/2019/dsa-4393Third Party Advisory
• http://lists.opensuse.org/opensuse-security-announce/2019-02/msg00070.htmlThird Party Advisory
• http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00062.htmlMailing List, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2019/02/18/3Mailing List, Patch, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2019/02/19/1Mailing List, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2021/07/20/2Exploit, Mailing List, Third Party Advisory
• http://www.securityfocus.com/bid/107081Third Party Advisory, VDB Entry
• https://access.redhat.com/errata/RHSA-2019:0368Third Party Advisory
• https://access.redhat.com/errata/RHSA-2019:0990Third Party Advisory
• https://access.redhat.com/errata/RHSA-2019:1322Third Party Advisory
• https://access.redhat.com/errata/RHSA-2019:1502Third Party Advisory
• https://access.redhat.com/errata/RHSA-2019:2805Third Party Advisory
• https://github.com/systemd/systemd/commits/master/src/libsystemd/sd-bus/bus-objects.cPatch, Third Party Advisory
• https://kc.mcafee.com/corporate/index?page=content&id=SB10278Patch, Third Party Advisory
• https://lists.debian.org/debian-lts-announce/2019/02/msg00031.htmlMailing List, Third Party Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/N67IOBOTDOMVNQJ5QRU2MXLEECXPGNVJ/
• https://security.netapp.com/advisory/ntap-20190327-0004/Third Party Advisory
• https://usn.ubuntu.com/3891-1/Third Party Advisory
• https://www.debian.org/security/2019/dsa-4393Third Party Advisory

Published

Mar 21, 2019

Last Modified

Jun 17, 2026

Status

Modified