CVE-2018-1091

 

Published at: - 27-03-2018 11:29

Last modified: - 26-10-2022 01:44

Total changes: - 3

Description

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.

Common Vulnerability Scoring System (CVSS)

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

 

Verification logic

 

Reference

• https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.5
• https://github.com/torvalds/linux/commit/c1fa0768a8713b135848f78fd43ffc208d8ded70
• https://bugzilla.redhat.com/show_bug.cgi?id=1558149
• https://access.redhat.com/security/cve/cve-2018-1091
• http://openwall.com/lists/oss-security/2018/03/27/4
• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c1fa0768a8713b135848f78fd43ffc208d8ded70
• https://marc.info/?l=linuxppc-embedded&m=150535531910494&w=2
• RHSA-2018:1318-

 

Keywords

NVD

 

CVE-2018-1091

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures