tree 3601d25bbbea1399bc3207955e9340bd49fd09fd
parent 6cc7c266e5b47d3cd2b5bb7fd3aac4e6bb2dd1d2
author Roberto Sassu <roberto.sassu@huawei.com> 1591339828 +0200
committer Mimi Zohar <zohar@linux.ibm.com> 1591351451 -0400

ima: Directly free *entry in ima_alloc_init_template() if digests is NULL

To support multiple template digests, the static array entry->digest has
been replaced with a dynamically allocated array in commit aa724fe18a8a
("ima: Switch to dynamically allocated buffer for template digests"). The
array is allocated in ima_alloc_init_template() and if the returned pointer
is NULL, ima_free_template_entry() is called.

However, (*entry)->template_desc is not yet initialized while it is used by
ima_free_template_entry(). This patch fixes the issue by directly freeing
*entry without calling ima_free_template_entry().

Fixes: aa724fe18a8a ("ima: Switch to dynamically allocated buffer for template digests")
Reported-by: syzbot+223310b454ba6b75974e@syzkaller.appspotmail.com
Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com>
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>