From 6d14c6517885fa68524238787420511b87d671df Mon Sep 17 00:00:00 2001 From: Lakshmi Ramasubramanian Date: Thu, 4 Feb 2021 09:49:50 -0800 Subject: [PATCH] ima: Free IMA measurement buffer on error IMA allocates kernel virtual memory to carry forward the measurement list, from the current kernel to the next kernel on kexec system call, in ima_add_kexec_buffer() function. In error code paths this memory is not freed resulting in memory leak. Free the memory allocated for the IMA measurement list in the error code paths in ima_add_kexec_buffer() function. Signed-off-by: Lakshmi Ramasubramanian Suggested-by: Tyler Hicks Fixes: 7b8589cc29e7 ("ima: on soft reboot, save the measurement list") Signed-off-by: Mimi Zohar --- security/integrity/ima/ima_kexec.c | 1 + 1 file changed, 1 insertion(+) diff --git a/security/integrity/ima/ima_kexec.c b/security/integrity/ima/ima_kexec.c index 121de3e..206ddca 100644 --- a/security/integrity/ima/ima_kexec.c +++ b/security/integrity/ima/ima_kexec.c @@ -119,6 +119,7 @@ void ima_add_kexec_buffer(struct kimage *image) ret = kexec_add_buffer(&kbuf); if (ret) { pr_err("Error passing over kexec measurement buffer.\n"); + vfree(kexec_buffer); return; } -- 2.7.4