CVE-2015-8953

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.

CVSS v3.0 NVD

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

CVSS v2.0 NVD

4.9 MEDIUMAV:L/AC:L/Au:N/C:N/I:N/A:C

EPSS

0.56% chance of exploitation in the next 30 days, 46th percentile

Published

2016-10-16

Updated

2024-08-06

Proof-of-concept exploits (1)

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

Security advisories

• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ab79efab0a0ba01…
• http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.2.6
• https://bugzilla.redhat.com/show_bug.cgi?id=1367814
• torvalds/linux/commit/ab79efab0a0ba01a74df782eb7fa44b044dae8b5
• http://www.securityfocus.com/bid/92611

References

• CVE Record
• NVD entry