Commit 40233e7c authored Jul 26, 2019 by Linus Torvalds

selinux

Pull selinux fix from Paul Moore:
 "One small SELinux patch to add some proper bounds/overflow checking
  when adding a new sid/secid"

* tag 'selinux-pr-20190726' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux:
  selinux: check sidtab limit before adding a new entry

parents a6898389 acbc372e

security/selinux/ss/sidtab.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -286,6 +286,11 @@ static int sidtab_reverse_lookup(struct sidtab s, struct context context,
		++count;
		}

		/* bail out if we already reached max entries */
		rc = -EOVERFLOW;
		if (count >= SIDTAB_MAX)
		goto out_unlock;

		/* insert context into new entry */
		rc = -ENOMEM;
		dst = sidtab_do_lookup(s, count, 1);