Commit c5563bad authored Dec 11, 2019 by Lakshmi Ramasubramanian Committed by Mimi Zohar Dec 12, 2019

IMA: Check IMA policy flag



process_buffer_measurement() may be called prior to IMA being
initialized (for instance, when the IMA hook is called when
a key is added to the .builtin_trusted_keys keyring), which
would result in a kernel panic.

This patch adds the check in process_buffer_measurement()
to return immediately if IMA is not initialized yet.

Signed-off-by: Lakshmi Ramasubramanian <nramas@linux.microsoft.com>
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>

parent 96c9e1de

security/integrity/ima/ima_main.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -655,6 +655,9 @@ void process_buffer_measurement(const void *buf, int size,
		int action = 0;
		u32 secid;

		if (!ima_policy_flag)
		return;

		/*
		* Both LSM hooks and auxilary based buffer measurements are
		* based on policy. To avoid code duplication, differentiate

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