CVE-2015-8953

medium

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

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

https://euvd.enisa.europa.eu/vulnerability/EUVD-2015-8809

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

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

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

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

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

Details

Source: Mitre, NVD

Published: 2016-10-16

Updated: 2026-05-06

Risk Information

CVSS v2

Base Score: 4.9

Vector: CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:C

Severity: Medium

CVSS v3

Base Score: 5.5

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