Merge tag 'efi-2021-04-rc2-2' of https://gitlab.denx.de/u-boot/custodians/u-boot-efi

Pull request for UEFI sub-system for efi-2021-04-rc2-2

Bug fixes:
* fix stack smashing in UEFI capsule updates
* correct loading of UEFI binaries where Virtual size is not a
  multiple of FileAlignment
* simplify detection of capsule files.
* buildman: use threading.is_alive() instead of removed method IsAlive()

lib/efi_loader/efi_capsule.c

@@ -42,20 +42,28 @@ static struct efi_file_handle *bootdev_root;
 static __maybe_unused unsigned int get_last_capsule(void)
 {
 	u16 value16[11]; /* "CapsuleXXXX": non-null-terminated */
-	char value[11], *p;
+	char value[5];
 	efi_uintn_t size;
 	unsigned long index = 0xffff;
 	efi_status_t ret;
+	int i;
 
 	size = sizeof(value16);
 	ret = efi_get_variable_int(L"CapsuleLast", &efi_guid_capsule_report,
 				   NULL, &size, value16, NULL);
-	if (ret != EFI_SUCCESS || u16_strncmp(value16, L"Capsule", 7))
+	if (ret != EFI_SUCCESS || size != 22 ||
+	    u16_strncmp(value16, L"Capsule", 7))
 		goto err;
+	for (i = 0; i < 4; ++i) {
+		u16 c = value16[i + 7];
 
-	p = value;
-	utf16_utf8_strcpy(&p, value16);
-	strict_strtoul(&value[7], 16, &index);
+		if (!c || c > 0x7f)
+			goto err;
+		value[i] = c;
+	}
+	value[4] = 0;
+	if (strict_strtoul(value, 16, &index))
+		index = 0xffff;
 err:
 	return index;
 }
@@ -753,9 +761,7 @@ static efi_status_t efi_capsule_scan_dir(u16 ***files, unsigned int *num)
 		if (!tmp_size)
 			break;
 
-		if (!(dirent->attribute & EFI_FILE_DIRECTORY) &&
-		    u16_strcmp(dirent->file_name, L".") &&
-		    u16_strcmp(dirent->file_name, L".."))
+		if (!(dirent->attribute & EFI_FILE_DIRECTORY))
 			count++;
 	}
 

lib/efi_loader/efi_image_loader.c

@@ -843,7 +843,7 @@ efi_status_t efi_load_pe(struct efi_loaded_image_obj *handle,
 		       sec->Misc.VirtualSize);
 		memcpy(efi_reloc + sec->VirtualAddress,
 		       efi + sec->PointerToRawData,
-		       sec->SizeOfRawData);
+		       min(sec->Misc.VirtualSize, sec->SizeOfRawData));
 	}
 
 	/* Run through relocations */

tools/buildman/builder.py

@@ -1691,7 +1691,7 @@ class Builder:
         term = threading.Thread(target=self.queue.join)
         term.setDaemon(True)
         term.start()
-        while term.isAlive():
+        while term.is_alive():
             term.join(100)
 
         # Wait until we have processed all output