What is CVE-2015-8953?

CVE-2015-8953 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10. CVE-2015-8953 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2015-8953?

CVE-2015-8953 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2015-8953?

No patch is currently available for CVE-2015-8953. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2015-8953 actively exploited?

CVE-2015-8953 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2015-8953

Medium

fs/overlayfs/copy_up.c in the Linux kernel before 4.2.6 uses an incorrect cleanup code path, which allows local users to cause a denial of service (dentry reference leak) via filesystem operations on a large file in a lower overlayfs layer.

Package Linux Kernel

Published 2016-10-16

Last modified 2026-05-06

CVSS version 3.0

Patch available

Awaiting data

CVSS 3.0 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness type

CWE-399

CVE-2015-8953 is classified as CWE-399

See CWE-399 on MITRE CWE for full details on this weakness type.

References

The following references provide additional information about CVE-2015-8953 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel.org
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.2.6

Release Notes Vendor Advisory
Openwall
http://www.openwall.com/lists/oss-security/2016/08/23/9

Exploit Third Party Advisory
Securityfocus
http://www.securityfocus.com/bid/92611
Red Hat
https://bugzilla.redhat.com/show_bug.cgi?id=1367814

Issue Tracking Third Party Advisory VDB Entry
Kernel patch commit
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ab79efab0a0ba01a74df782eb7fa44b044dae8b5
Patch
Kernel patch commit
https://github.com/torvalds/linux/commit/ab79efab0a0ba01a74df782eb7fa44b044dae8b5
Patch

Details

CVE ID CVE-2015-8953

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.0

Published 2016-10-16

Modified 2026-05-06

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2015-8953?

CVE-2015-8953 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . CVE-2015-8953 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2015-8953?

CVE-2015-8953 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.0). The vector string is CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2015-8953?

No patch is currently available for CVE-2015-8953. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2015-8953 actively exploited?

No — CVE-2015-8953 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.