cve/2009/CVE-2009-1238.md

CVE-2009-1238

Description

Race condition in the HFS vfs sysctl interface in XNU 1228.8.20 and earlier on Apple Mac OS X 10.5.6 and earlier allows local users to cause a denial of service (kernel memory corruption) by simultaneously executing the same HFS_SET_PKG_EXTENSIONS code path in multiple threads, which is problematic because of lack of mutex locking for an unspecified global variable.

POC

Reference

• http://www.digit-labs.org/files/exploits/xnu-vfssysctl-dos.c
• https://www.exploit-db.com/exploits/8265

Github

No PoCs found on GitHub currently.