diff --git a/osbase/bringup/test/run_test.go b/osbase/bringup/test/run_test.go
index 5b9b4cb..03ae71b 100644
--- a/osbase/bringup/test/run_test.go
+++ b/osbase/bringup/test/run_test.go
@@ -5,6 +5,8 @@
 
 import (
 	"context"
+	"os"
+	"path/filepath"
 	"testing"
 	"time"
 
@@ -36,6 +38,18 @@
 			panic(err)
 		}
 	}
+	// When running QEMU with snapshot=on set, QEMU creates a copy of the
+	// provided file in $TMPDIR. If $TMPDIR is set to /tmp, it will always
+	// be overridden to /var/tmp. This creates an issue for us, as the
+	// bazel tests only wire up /tmp, with /var/tmp being unaccessible
+	// because of permissions. Bazel provides $TEST_TMPDIR for this
+	// usecase, which we resolve to an absolute path and then override
+	// $TMPDIR.
+	tmpDir, err := filepath.Abs(os.Getenv("TEST_TMPDIR"))
+	if err != nil {
+		panic(err)
+	}
+	os.Setenv("TMPDIR", tmpDir)
 }
 
 // runQemu starts a new QEMU process, expecting the given output to appear