4.20-stable review patch. If anyone has any objections, please let me know.
------------------
[ Upstream commit d6d478aee003e19ef90321176552a8ad2929a47f ]
aa_label_merge() can return NULL for memory allocations failures
make sure to handle and set the correct error in this case.
Reported-by: Peng Hao <peng.hao2@xxxxxxxxxx>
Signed-off-by: John Johansen <john.johansen@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
security/apparmor/domain.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/security/apparmor/domain.c b/security/apparmor/domain.c
index 08c88de0ffda..11975ec8d566 100644
--- a/security/apparmor/domain.c
+++ b/security/apparmor/domain.c
@@ -1444,7 +1444,10 @@ int aa_change_profile(const char *fqname, int flags)
new = aa_label_merge(label, target, GFP_KERNEL);
if (IS_ERR_OR_NULL(new)) {
info = "failed to build target label";
- error = PTR_ERR(new);
+ if (!new)
+ error = -ENOMEM;
+ else
+ error = PTR_ERR(new);
new = NULL;
perms.allow = 0;
goto audit;
--
2.19.1
