CVE-2010-1636 Information

Description

The btrfs_ioctl_clone function in fs/btrfs/ioctl.c in the btrfs functionality in the Linux kernel 2.6.29 through 2.6.32 and possibly other versions does not ensure that a cloned file descriptor has been opened for reading which allows local users to read sensitive information from a write-only file descriptor.

Reference

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=5dc6416414fb3ec6e2825fd4d20c8bf1d7fe0395 http://www.openwall.com/lists/oss-security/2010/05/18/10 http://www.openwall.com/lists/oss-security/2010/05/18/2 http://www.openwall.com/lists/oss-security/2010/05/25/8 https://bugs.launchpad.net/ubuntu/+source/linux/+bug/579585 https://bugzilla.redhat.com/show_bug.cgi?id=593226