{"id":"CVE-2018-1091","details":"In the flush_tmregs_to_thread function in arch/powerpc/kernel/ptrace.c in the Linux kernel before 4.13.5, a guest kernel crash can be triggered from unprivileged userspace during a core dump on a POWER host due to a missing processor feature check and an erroneous use of transactional memory (TM) instructions in the core dump path, leading to a denial of service.","modified":"2026-03-12T22:44:50.586826Z","published":"2018-03-27T21:29:00.720Z","related":["SUSE-SU-2018:1048-1","SUSE-SU-2018:1217-1","SUSE-SU-2019:1287-1"],"references":[{"type":"ADVISORY","url":"http://openwall.com/lists/oss-security/2018/03/27/4"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2018:1318"},{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/cve-2018-1091"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1558149"},{"type":"FIX","url":"https://github.com/torvalds/linux/commit/c1fa0768a8713b135848f78fd43ffc208d8ded70"},{"type":"FIX","url":"https://marc.info/?l=linuxppc-embedded&m=150535531910494&w=2"},{"type":"FIX","url":"https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.5"},{"type":"FIX","url":"http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c1fa0768a8713b135848f78fd43ffc208d8ded70"}],"affected":[{"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2018-1091.json","unresolved_ranges":[{"events":[{"introduced":"0"},{"last_affected":"4.13.4"}]}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}