Messages in this thread Patch in this message | | | From | Xiu Jianfeng <> | Subject | [PATCH -next] apparmor: Fix memleak in aa_simple_write_to_buffer() | Date | Tue, 14 Jun 2022 17:00:01 +0800 |
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When copy_from_user failed, the memory is freed by kvfree. however the management struct and data blob are allocated independently, so only kvfree(data) cause a memleak issue here. Use aa_put_loaddata(data) to fix this issue.
Fixes: a6a52579e52b5 ("apparmor: split load data into management struct and data blob") Signed-off-by: Xiu Jianfeng <xiujianfeng@huawei.com> --- security/apparmor/apparmorfs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/security/apparmor/apparmorfs.c b/security/apparmor/apparmorfs.c index 8b9c92f3ff95..0275a350dc23 100644 --- a/security/apparmor/apparmorfs.c +++ b/security/apparmor/apparmorfs.c @@ -403,7 +403,7 @@ static struct aa_loaddata *aa_simple_write_to_buffer(const char __user *userbuf, data->size = copy_size; if (copy_from_user(data->data, userbuf, copy_size)) { - kvfree(data); + aa_put_loaddata(data); return ERR_PTR(-EFAULT); } -- 2.17.1
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