[PATCH 1/5] efi_selftest: fix buffer overflow

[Vincent Stehlé]

The test of the UEFI LocateHandleBuffer() function clears a returned buffer
at some point to reuse it, but there is an error in the size computation,
which leads to a buffer overflow; fix it.

Fixes: 927ca890b09f ("efi_selftest: test protocol management")
Signed-off-by: Vincent Stehlé <vincent.stehle at arm.com>
Cc: Heinrich Schuchardt <xypron.glpk at gmx.de>
Cc: Ilias Apalodimas <ilias.apalodimas at linaro.org>
Cc: Tom Rini <trini at konsulko.com>
---
 lib/efi_selftest/efi_selftest_manageprotocols.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/efi_selftest/efi_selftest_manageprotocols.c b/lib/efi_selftest/efi_selftest_manageprotocols.c
index 097b2ae3545..ccffa59095d 100644
--- a/lib/efi_selftest/efi_selftest_manageprotocols.c
+++ b/lib/efi_selftest/efi_selftest_manageprotocols.c
@@ -241,7 +241,7 @@ static int execute(void)
 		return EFI_ST_FAILURE;
 	}
 	/* Clear the buffer, we are reusing it it the next step. */
-	boottime->set_mem(buffer, sizeof(efi_handle_t) * buffer_size, 0);
+	boottime->set_mem(buffer, sizeof(efi_handle_t) * count, 0);
 
 	/*
 	 * Test LocateHandle with ByProtocol
-- 
2.51.0