National Vulnerability Database

National Vulnerability Database

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    Vulnerabilities Detail

CVE-2018-1091 Detail

Current 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.

Source:  MITRE
Description Last Modified:  03/27/2018
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 5.5 MEDIUM
Vector: AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H (V3 legend)
Impact Score: 3.6
Exploitability Score: 1.8

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

CVSS v2.0 Severity and Metrics:

Base Score: 4.9 MEDIUM
Vector: (AV:L/AC:L/Au:N/C:N/I:N/A:C) (V2 legend)
Impact Subscore: 6.9
Exploitability Subscore: 3.9

Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Complete
Additional Information:
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink 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

Technical Details

Vulnerability Type (View All)

Change History

3 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2018-1091
NVD Published Date:
03/27/2018
NVD Last Modified:
05/09/2018