Greg Kroah-Hartman has announced the release of the 3.0.51 (diffs), 3.4.18 (diffs), and 3.6.6 (diffs) stable kernels. They contain fixes throughout the tree and users should upgrade. The latter two (3.4.18, 3.6.6) contain the fix for the ext4 corruption problem that initially looked much worse than it turned out to be.
November 5, 2012
Stable Kernels 3.0.51, 3.4.18, and 3.6.6 Released
Read more at LWN