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.
References
Link | Resource |
---|---|
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c1fa0768a8713b135848f78fd43ffc208d8ded70 | Patch Vendor Advisory |
http://openwall.com/lists/oss-security/2018/03/27/4 | Mailing List Third Party Advisory |
https://access.redhat.com/errata/RHSA-2018:1318 | |
https://access.redhat.com/security/cve/cve-2018-1091 | Third Party Advisory |
https://bugzilla.redhat.com/show_bug.cgi?id=1558149 | Issue Tracking Third Party Advisory |
https://github.com/torvalds/linux/commit/c1fa0768a8713b135848f78fd43ffc208d8ded70 | Patch Third Party Advisory |
https://marc.info/?l=linuxppc-embedded&m=150535531910494&w=2 | Patch Third Party Advisory |
https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.5 | Patch Vendor Advisory |
History
No history.
MITRE Information
Status: PUBLISHED
Assigner: redhat
Published: 2018-03-27T21:00:00
Updated: 2018-05-09T09:57:01
Reserved: 2017-12-04T00:00:00
Link: CVE-2018-1091
JSON object: View
NVD Information
Status : Modified
Published: 2018-03-27T21:29:00.720
Modified: 2018-05-10T01:29:05.627
Link: CVE-2018-1091
JSON object: View
Redhat Information
No data.