ima: Fix a potential NULL pointer access in ima_restore_measurement_list
authorHuaxin Lu <luhuaxin1@huawei.com>
Wed, 2 Nov 2022 16:09:49 +0000 (00:09 +0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sat, 7 Jan 2023 10:11:52 +0000 (11:11 +0100)
commit3ac71fd8ffa11b78f54200f3fd988f887c658ded
treef9baff9c8a283f13be6a4daf774b05db1caf57cf
parent9944a141e5eaaef6f2298cd3be1783b027b4a0dd
ima: Fix a potential NULL pointer access in ima_restore_measurement_list

commit 11220db412edae8dba58853238f53258268bdb88 upstream.

In restore_template_fmt, when kstrdup fails, a non-NULL value will still be
returned, which causes a NULL pointer access in template_desc_init_fields.

Fixes: c7d09367702e ("ima: support restoring multiple template formats")
Cc: stable@kernel.org
Co-developed-by: Jiaming Li <lijiaming30@huawei.com>
Signed-off-by: Jiaming Li <lijiaming30@huawei.com>
Signed-off-by: Huaxin Lu <luhuaxin1@huawei.com>
Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
security/integrity/ima/ima_template.c