CVEs-PoC/2015/CVE-2015-8953.md

CVE-2015-8953

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.

POC

Reference

• http://www.openwall.com/lists/oss-security/2016/08/23/9
• https://github.com/torvalds/linux/commit/ab79efab0a0ba01a74df782eb7fa44b044dae8b5

Github

No PoCs found on GitHub currently.