CVE-2014-8086

Severity: medium (CVSS 4.7 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2014-10-13 · updated 2026-06-17
Weakness: CWE-362

Description

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.

Affected products

Linux kernel: through 3.17
SUSE Linux Enterprise: 11-sp2

References

http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00004.html
http://rhn.redhat.com/errata/RHSA-2015-0290.html
http://rhn.redhat.com/errata/RHSA-2015-0694.html
http://www.openwall.com/lists/oss-security/2014/10/09/25
http://www.securityfocus.com/bid/70376
http://www.spinics.net/lists/linux-ext4/msg45683.html
http://www.spinics.net/lists/linux-ext4/msg45685.html
https://bugzilla.redhat.com/show_bug.cgi?id=1151353
https://exchange.xforce.ibmcloud.com/vulnerabilities/96922
https://lkml.org/lkml/2014/10/8/545
https://lkml.org/lkml/2014/10/9/129
http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00004.html

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