CVE-2014-8086

low-risk
Published 2014-10-13

Race condition in the ext4_file_write_iter function in fs/ext4/file.c in the Linux kernel through 3.17 allows local users to cause a denial of service (file unavailability) via a combination of a write action and an F_SETFL fcntl operation for the O_DIRECT flag.

Do I need to act?

-
0.04% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
4
CVSS 4.7/10 Medium
LOCAL / HIGH complexity

Affected Products (2)

Affected Vendors

Suse Linux

References (22)

Mailing List http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00004.html
Third Party Advisory http://rhn.redhat.com/errata/RHSA-2015-0290.html
Third Party Advisory http://rhn.redhat.com/errata/RHSA-2015-0694.html
Mailing List http://www.openwall.com/lists/oss-security/2014/10/09/25
Third Party Advisory http://www.securityfocus.com/bid/70376
Exploit http://www.spinics.net/lists/linux-ext4/msg45683.html
Mailing List http://www.spinics.net/lists/linux-ext4/msg45685.html
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=1151353
Third Party Advisory https://exchange.xforce.ibmcloud.com/vulnerabilities/96922
Exploit https://lkml.org/lkml/2014/10/8/545
Exploit https://lkml.org/lkml/2014/10/9/129
Mailing List http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00004.html
Third Party Advisory http://rhn.redhat.com/errata/RHSA-2015-0290.html
Third Party Advisory http://rhn.redhat.com/errata/RHSA-2015-0694.html
Mailing List http://www.openwall.com/lists/oss-security/2014/10/09/25
Third Party Advisory http://www.securityfocus.com/bid/70376
Exploit http://www.spinics.net/lists/linux-ext4/msg45683.html
Mailing List http://www.spinics.net/lists/linux-ext4/msg45685.html
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=1151353
Third Party Advisory https://exchange.xforce.ibmcloud.com/vulnerabilities/96922
and 2 more references
19
/ 100
low-risk
Severity 12/34 · Low
Exploitability 0/34 · Minimal
Exposure 7/34 · Low