Vulnerability in Linux Kernel
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.
Vulnerability class: Race Condition
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.004 (28.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 29th percentile — 28.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Linux Kernel
- SUSE Linux Enterprise Server — versions 11
Weakness classification (CWE)
Public proof-of-concept exploits
References
- lkml.org/lkml/2014/10/8/545 (mailing-list, Exploit, Mailing List, Third Party Advisory)
- www.securityfocus.com/bid/70376 (VDB Entry, Third Party Advisory, vdb-entry)
- www.spinics.net/lists/linux-ext4/msg45685.html (mailing-list, Patch, Mailing List, Third Party Advisory)
- bugzilla.redhat.com/show_bug.cgi (Patch, Third Party Advisory, Issue Tracking)
- www.spinics.net/lists/linux-ext4/msg45683.html (mailing-list, Exploit, Mailing List, Third Party Advisory)
- rhn.redhat.com/errata/RHSA-2015-0694.html (vendor-advisory, Third Party Advisory)
- rhn.redhat.com/errata/RHSA-2015-0290.html (vendor-advisory, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2015-09/msg00004.html (vendor-advisory, Mailing List, Third Party Advisory)
- exchange.xforce.ibmcloud.com/vulnerabilities/96922 (VDB Entry, Third Party Advisory, vdb-entry)
- lkml.org/lkml/2014/10/9/129 (mailing-list, Exploit, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2014-8086?
- CVE-2014-8086 is a medium-severity vulnerability in Linux Kernel, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 4.7/10. Published 2014-10-13.
- How severe is CVE-2014-8086?
- Medium severity. CVSS v3 base score is 4.7 out of 10.
- Is CVE-2014-8086 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.