From 337619eb44ef663d329c5c19efd18488ce7de492 Mon Sep 17 00:00:00 2001 From: Thiago Jung Bauermann Date: Thu, 27 Jun 2019 20:25:46 -0300 Subject: ima: Update MAX_TEMPLATE_NAME_LEN to fit largest reasonable definition MAX_TEMPLATE_NAME_LEN is used when restoring measurements carried over from a kexec. It should be set to the length of a template containing all fields except for 'd' and 'n', which don't need to be accounted for since they shouldn't be defined in the same template description as 'd-ng' and 'n-ng'. That length is greater than the current 15, so update using a sizeof() to show where the number comes from and also can be visually shown to be correct. The sizeof() is calculated at compile time. Signed-off-by: Thiago Jung Bauermann Signed-off-by: Mimi Zohar --- security/integrity/ima/ima_template.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'security') diff --git a/security/integrity/ima/ima_template.c b/security/integrity/ima/ima_template.c index a01a17e5c581..7343e8e0ae2f 100644 --- a/security/integrity/ima/ima_template.c +++ b/security/integrity/ima/ima_template.c @@ -47,7 +47,13 @@ static const struct ima_template_field supported_fields[] = { {.field_id = "buf", .field_init = ima_eventbuf_init, .field_show = ima_show_template_buf}, }; -#define MAX_TEMPLATE_NAME_LEN 15 + +/* + * Used when restoring measurements carried over from a kexec. 'd' and 'n' don't + * need to be accounted for since they shouldn't be defined in the same template + * description as 'd-ng' and 'n-ng' respectively. + */ +#define MAX_TEMPLATE_NAME_LEN sizeof("d-ng|n-ng|sig|buf") static struct ima_template_desc *ima_template; -- cgit v1.2.3-55-g7522