The epoll implementation in the Linux kernel 2.6.37.2 and earlier does not properly traverse a tree of epoll file descriptors, which allows local users to cause a denial of service via a crafted application that makes epoll_create and epoll_ctl system calls.Buffer overflow in the xfs_readlink function in fs/xfs/xfs_vnodeops.c in XFS in the Linux kernel 2.6, when CONFIG_XFS_DEBUG is disabled, allows local users to cause a denial of service and possibly execute arbitrary code via an XFS image containing a symbolic link with a long pathname.crypto/ghash-generic.c in the Linux kernel before 3.1 allows local users to cause a denial of service or possibly have unspecified other impact by triggering a failed or missing ghash_setkey function call, followed by a ghash_update function call or ghash_final function call, as demonstrated by a write operation on an AF_ALG socket.