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lib/test: use after free in register_test_dev_kmod()

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[ Upstream commit dc0ce6cc4b ]

The "test_dev" pointer is freed but then returned to the caller.

Fixes: d9c6a72d6f ("kmod: add test driver to stress test the module loader")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Dan Carpenter 2022-03-24 08:52:07 +03:00 committed by Greg Kroah-Hartman
parent 00d2b9fe5e
commit 327f07e370
1 changed files with 1 additions and 0 deletions
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lib/test_kmod.c
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@ -1155,6 +1155,7 @@ static struct kmod_test_device *register_test_dev_kmod(void)
if (ret) { if (ret) {
pr_err("could not register misc device: %d\n", ret); pr_err("could not register misc device: %d\n", ret);
free_test_dev_kmod(test_dev); free_test_dev_kmod(test_dev);
test_dev = NULL;
goto out; goto out;
} }