Commit 9ef38b24 authored by Stephen Smalley's avatar Stephen Smalley Committed by Greg Kroah-Hartman

selinux: fix GPF on invalid policy

commit 5b0e7310 upstream.

levdatum->level can be NULL if we encounter an error while loading
the policy during sens_read prior to initializing it.  Make sure
sens_destroy handles that case correctly.

Reported-by: syzbot+6664500f0f18f07a5c0e@syzkaller.appspotmail.com
Signed-off-by: default avatarStephen Smalley <sds@tycho.nsa.gov>
Signed-off-by: default avatarPaul Moore <paul@paul-moore.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 84ba6b78
...@@ -726,7 +726,8 @@ static int sens_destroy(void *key, void *datum, void *p) ...@@ -726,7 +726,8 @@ static int sens_destroy(void *key, void *datum, void *p)
kfree(key); kfree(key);
if (datum) { if (datum) {
levdatum = datum; levdatum = datum;
ebitmap_destroy(&levdatum->level->cat); if (levdatum->level)
ebitmap_destroy(&levdatum->level->cat);
kfree(levdatum->level); kfree(levdatum->level);
} }
kfree(datum); kfree(datum);
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment