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 <nramas@xxxxxxxxxxxxxxxxxxx>
Suggested-by: Tyler Hicks <tyhicks@xxxxxxxxxxxxxxxxxxx>
Fixes: 7b8589cc29e7 ("ima: on soft reboot, save the measurement list")
---
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 121de3e04af2..206ddcaa5c67 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;
}
--
2.30.0
