CVE Vulnerability

CVE-2018-1091

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.

4.9 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 6.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact COMPLETE

Scope

5.5 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.5 Patch Vendor Advisory
https://github.com/torvalds/linux/commit/c1fa0768a8713b135848f78fd43ffc208d8ded70 Patch Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1558149 Issue Tracking Third Party Advisory
https://access.redhat.com/security/cve/cve-2018-1091 Third Party Advisory
http://openwall.com/lists/oss-security/2018/03/27/4 Mailing List Third Party Advisory
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c1fa0768a8713b135848f78fd43ffc208d8ded70 Patch Vendor Advisory
https://marc.info/?l=linuxppc-embedded&m=150535531910494&w=2 Patch Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:1318
Configurations

Configuration 1

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Information

Published : 2018-03-27 09:29

Updated : 2018-05-10 01:29

NVD link : CVE-2018-1091

Mitre link : CVE-2018-1091

Products Affected
No products.
CWE
CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer