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KEYS: Fix use-after-free in assoc_array_gc()

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An edit script should be considered inaccessible by a function once it has
called assoc_array_apply_edit() or assoc_array_cancel_edit().

However, assoc_array_gc() is accessing the edit script just after the
gc_complete: label.

Reported-by: Andreea-Cristina Bernat <bernat.ada@gmail.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Andreea-Cristina Bernat <bernat.ada@gmail.com>
cc: shemming@brocade.com
cc: paulmck@linux.vnet.ibm.com
Cc: stable@vger.kernel.org
Signed-off-by: James Morris <james.l.morris@oracle.com>
This commit is contained in:
David Howells 2014-09-02 13:52:20 +01:00 committed by James Morris
parent 876c6e3e02
commit 27419604f5
1 changed files with 1 additions and 1 deletions
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2
lib/assoc_array.c
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@ -1735,7 +1735,7 @@ int assoc_array_gc(struct assoc_array *array,
gc_complete:
edit->set[0].to = new_root;
assoc_array_apply_edit(edit);
edit->array->nr_leaves_on_tree = nr_leaves_on_tree;
array->nr_leaves_on_tree = nr_leaves_on_tree;
return 0;
enomem: