CVE-2014-8086

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.

• CWE-362

• http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00004.htmlMailing List, Third Party Advisory
• http://rhn.redhat.com/errata/RHSA-2015-0290.htmlThird Party Advisory
• http://rhn.redhat.com/errata/RHSA-2015-0694.htmlThird Party Advisory
• http://www.openwall.com/lists/oss-security/2014/10/09/25Mailing List, Third Party Advisory
• http://www.securityfocus.com/bid/70376Third Party Advisory, VDB Entry
• http://www.spinics.net/lists/linux-ext4/msg45683.htmlExploit, Mailing List, Third Party Advisory
• http://www.spinics.net/lists/linux-ext4/msg45685.htmlMailing List, Patch, Third Party Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=1151353Issue Tracking, Patch, Third Party Advisory
• https://exchange.xforce.ibmcloud.com/vulnerabilities/96922Third Party Advisory, VDB Entry
• https://lkml.org/lkml/2014/10/8/545Exploit, Mailing List, Third Party Advisory
• https://lkml.org/lkml/2014/10/9/129Exploit, Mailing List, Third Party Advisory
• http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00004.htmlMailing List, Third Party Advisory
• http://rhn.redhat.com/errata/RHSA-2015-0290.htmlThird Party Advisory
• http://rhn.redhat.com/errata/RHSA-2015-0694.htmlThird Party Advisory
• http://www.openwall.com/lists/oss-security/2014/10/09/25Mailing List, Third Party Advisory
• http://www.securityfocus.com/bid/70376Third Party Advisory, VDB Entry
• http://www.spinics.net/lists/linux-ext4/msg45683.htmlExploit, Mailing List, Third Party Advisory
• http://www.spinics.net/lists/linux-ext4/msg45685.htmlMailing List, Patch, Third Party Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=1151353Issue Tracking, Patch, Third Party Advisory
• https://exchange.xforce.ibmcloud.com/vulnerabilities/96922Third Party Advisory, VDB Entry
• https://lkml.org/lkml/2014/10/8/545Exploit, Mailing List, Third Party Advisory
• https://lkml.org/lkml/2014/10/9/129Exploit, Mailing List, Third Party Advisory

Published

Oct 13, 2014

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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