What is CVE-2015-8839?

CVE-2015-8839 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.1 out of 10, classified as a Race Condition flaw (CWE-362). CVE-2015-8839 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2015-8839?

CVE-2015-8839 has a CVSS score of 5.1 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2015-8839?

Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2015-8839 patch availability.

Is CVE-2015-8839 actively exploited?

CVE-2015-8839 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Race Condition (CWE-362)?

The product contains a code sequence that can run concurrently with other code, creating unexpected states. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/362.html

CVE-2015-8839

Medium

Multiple race conditions in the ext4 filesystem implementation in the Linux kernel before 4.5 allow local users to cause a denial of service (disk corruption) by writing to a page that is associated with a different user's file after unsynchronized hole punching and page-fault handling.

Package Linux Kernel

Published 2016-05-02

Last modified 2026-05-06

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

5.1

out of 10

Medium

Attack Vector

Local

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

High

Vector string

CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness type

CWE-362

CVE-2015-8839 is a Race Condition vulnerability

What is Race Condition?

The product contains a code sequence that can run concurrently with other code, creating unexpected states. Learn more on MITRE CWE

References

14 total

Kernel Git
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ea3d7209ca01da209cda6f0dea8be9cc4b7a933b

Vendor Advisory
Openwall
http://www.openwall.com/lists/oss-security/2016/04/01/4

Mailing List Third Party Advisory
Securityfocus
http://www.securityfocus.com/bid/85798

Third Party Advisory VDB Entry
Securitytracker
http://www.securitytracker.com/id/1035455

Third Party Advisory VDB Entry
Ubuntu Security
http://www.ubuntu.com/usn/USN-3005-1

Third Party Advisory

Showing 5 of 14 references View all on NVD

Details

CVE ID CVE-2015-8839

Severity Medium

CVSS score 5.1 / 10

CVSS version 3.1

Published 2016-05-02

Modified 2026-05-06

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2015-8839?

CVE-2015-8839 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.1 out of 10 , classified as a Race Condition flaw (CWE-362) . CVE-2015-8839 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2015-8839?

CVE-2015-8839 has a CVSS score of 5.1 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2015-8839?

Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2015-8839 patch availability.
Is CVE-2015-8839 actively exploited?

No. CVE-2015-8839 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.