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.


View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score:  5.5 MEDIUM
Vector:  CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H


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Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.

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 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer cwe source acceptance level NIST  
CWE-391 Unchecked Error Condition Reference acceptance level Red Hat, Inc.  

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Change History

4 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
Source:
MITRE