The I/O implementation for block devices in the Linux kernel before 2.6.33 does not properly handle the CLONE_IO feature, which allows local users to cause a denial of service (I/O instability) by starting multiple processes that share an I/O context.

The I/O implementation for block devices in the Linux kernel before 2.6.33 does not properly handle the CLONE_IO feature, which allows local users to cause a denial of service (I/O instability) by starting multiple processes that share an I/O context.

kernel: sysctl: restrict write access to dmesg_restrict kernel: block: CLONE_IO io_context refcounting issues kernel: cifs: dentry refcount leak when opening a FIFO on lookup leads to panic on unmount kernel: regset: Prevent null pointer reference on readonly regsets

Security update for Kernel