From 2074d87d0cbd51bcd3797838f5e2af9a0a04ac23 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?John=20Molakvo=C3=A6=20=28skjnldsv=29?=
 <skjnldsv@protonmail.com>
Date: Wed, 24 Mar 2021 10:36:51 +0100
Subject: [PATCH] Catch invalid cache source storage path
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Signed-off-by: John Molakvoæ (skjnldsv) <skjnldsv@protonmail.com>
---
 lib/private/Files/Cache/Cache.php | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/private/Files/Cache/Cache.php b/lib/private/Files/Cache/Cache.php
index 59e50164ef..b851076e2c 100644
--- a/lib/private/Files/Cache/Cache.php
+++ b/lib/private/Files/Cache/Cache.php
@@ -642,6 +642,10 @@ class Cache implements ICache {
 			$targetPath = $this->normalize($targetPath);
 
 			$sourceData = $sourceCache->get($sourcePath);
+			if ($sourceData === false) {
+				throw new \Exception('Invalid source storage path: ' . $sourcePath);
+			}
+
 			$sourceId = $sourceData['fileid'];
 			$newParentId = $this->getParentId($targetPath);