2 matches found
Kernel BUG() in locks_remove_flock
Race condition in the dosetlk function in fs/nfs/file.c in the Linux kernel before 2.6.26 allows local users to cause a denial of service crash via vectors resulting in an interrupted RPC call that leads to a stray FLPOSIX lock, related to improper handling of a race between fcntl and close in th...
Linux Kernel locks_remove_flock()本地竞争条件漏洞
BUGTRAQ ID: 33237 CVECAN ID: CVE-2008-4307 Linux Kernel是开放源码操作系统Linux所使用的内核。 RHEL4/5内核处理POSIX锁定时fcntl调用可能与关闭相同文件描述符出现竞争,本地攻击者可以利用这个漏洞导致拒绝服务或获得权限提升。 fcntl以如下方式获得POSIX锁定: sysfcntl fget dofcntl fcntlsetlk fput if!count fput locksremoveflock fcntlsetlk调用可能阻塞很长时间,允许同一进程中的其他线程关闭文件描述符: sysclose filpclos...