The __ext4_journal_stop function in fs/ext4/ext4_jbd2.c in the Linux kernel before 4.3.3 allows local users to gain privileges or cause a denial of service (use-after-free) by leveraging improper access to a certain error field.Referenceshttp://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6934da9238da947628be83635e365df41064b09bhttp://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3https://github.com/torvalds/linux/commit/6934da9238da947628be83635e365df41064b09bhttps://source.android.com/security/bulletin/2016-11-01.htmlhttp://www.securityfocus.com/bid/94135
