UBUNTU-CVE-2018-1091
Advisory lineage Upstream: 1 Downstream: 0
Upstream
Published: 27 Mar 2018, 21:29
Last modified:16 Jul 2025, 07:37
Vulnerability Summary
Overall Risk (default)
low
22/100 CVSS Score
5.5 MEDIUM
3.0 (osv_ubuntu)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected
Timeline
27 Mar 2018, 21:29
Published
Vulnerability first disclosed
16 Jul 2025, 07:37
Last Modified
Vulnerability information updated
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.
CVSS Metrics
- v3.0•MEDIUM•Score: 5.5CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected Systems
- ubuntu•linux-azure
< 4.15.0-1023.24~14.04.1 | < 4.13.0-1005.7
- ubuntu•linux-gcp
< 4.13.0-1002.5
- ubuntu•linux-hwe
< 4.13.0-26.29~16.04.2
- ubuntu•linux-oem
< 4.13.0-1008.9
References (9)
- https://ubuntu.com/security/CVE-2018-1091
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c1fa0768a8713b135848f78fd43ffc208d8ded70
- http://openwall.com/lists/oss-security/2018/03/27/4
- https://access.redhat.com/security/cve/cve-2018-1091
- https://bugzilla.redhat.com/show_bug.cgi?id=1558149
- https://github.com/torvalds/linux/commit/c1fa0768a8713b135848f78fd43ffc208d8ded70
- https://marc.info/?l=linuxppc-embedded&m=150535531910494&w=2
- https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.5
- https://www.cve.org/CVERecord?id=CVE-2018-1091