CVE-2015-8953

MEDIUM

Linux Kernel < 4.2.6 - Denial of Service via OverlayFS Dentry Reference Leak

Title source: llm

Description

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.

References (6)

Core 6

Core References

Exploit, Third Party Advisory mailing-list x_refsource_mlist

http://www.openwall.com/lists/oss-security/2016/08/23/9

Issue Tracking, Third Party Advisory, VDB Entry x_refsource_confirm

https://bugzilla.redhat.com/show_bug.cgi?id=1367814

Release Notes, Vendor Advisory x_refsource_confirm

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

Exploit, Patch, Vendor Advisory x_refsource_confirm

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ab79efab0a0ba01a74df782eb7fa44b044dae8b5

Patch x_refsource_confirm

https://github.com/torvalds/linux/commit/ab79efab0a0ba01a74df782eb7fa44b044dae8b5

Third Party Advisory, VDB Entry vdb-entry x_refsource_bid

http://www.securityfocus.com/bid/92611

Scores

CVSS v3 5.5

EPSS 0.0054

EPSS Percentile 42.6%

Attack Vector LOCAL

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

Details

CWE

CWE-399

Status published

Products (1)

linux/linux_kernel < 4.2.5

Published Oct 16, 2016

Tracked Since Feb 18, 2026