From: Ondrej Mosnacek omosnace@redhat.com
commit 6254bd3db316c9ccb3b05caa8b438be63245466f upstream.
The code attempts to free the 'new' pointer using kmem_cache_free(), which is wrong because this function isn't responsible of freeing it. Instead, the function should free new->htable and clear the contents of *new (to prevent double-free).
Cc: stable@vger.kernel.org Fixes: c7c556f1e81b ("selinux: refactor changing booleans") Reported-by: Wander Lairson Costa wander@redhat.com Signed-off-by: Ondrej Mosnacek omosnace@redhat.com Signed-off-by: Paul Moore paul@paul-moore.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- security/selinux/ss/hashtab.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
--- a/security/selinux/ss/hashtab.c +++ b/security/selinux/ss/hashtab.c @@ -179,7 +179,8 @@ int hashtab_duplicate(struct hashtab *ne kmem_cache_free(hashtab_node_cachep, cur); } } - kmem_cache_free(hashtab_node_cachep, new); + kfree(new->htable); + memset(new, 0, sizeof(*new)); return -ENOMEM; }