Race condition in the ext4_file_write_iter function in fs/ext4/file.c in the Linux kernel through 3.17 allows local users to cause a denial of service (file unavailability) via a combination of a write action and an F_SETFL fcntl operation for the O_DIRECT flag.

Race condition in the ext4_file_write_iter function in fs/ext4/file.c in the Linux kernel through 3.17 allows local users to cause a denial of service (file unavailability) via a combination of a write action and an F_SETFL fcntl operation for the O_DIRECT flag.

kernel: kvm: vmx: invalid host cr4 handling across vm entries Kernel: missing check during hugepage migration kernel: insufficient syscall number validation in perf and ftrace subsystems kernel: insufficient syscall number validation in perf and ftrace subsystems Kernel: fs: ext4 race condition kernel: iptables restriction bypass if a protocol handler kernel module not loaded kernel: soft lockup on aio kernel: NULL pointer dereference in madvise(MADV_WILLNEED) support kernel: net: mac80211: plain text information leak kernel: usb: buffer overflow in ttusb-dec kernel: xfs: replacing remote attributes memory corruption

kernel: splice: lack of generic write checks Kernel: fs: ext4 race condition kernel: soft lockup on aio kernel: NULL pointer dereference in madvise(MADV_WILLNEED) support kernel: xfs: replacing remote attributes memory corruption

Security update for Linux kernel

Affected: Ubuntu:14.04:LTS: linux-lts-utopic

Race condition in the ext4_file_write_iter function in fs/ext4/file.c in the Linux kernel through 3.17 allows local users to cause a denial of service (file unavailability) via a combination of a write action and an F_SETFL fcntl operation for the O_DIRECT flag.