systemd/0284-udev-event-explicitly-don-t-read-from-invalid-fd.patch

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2014-10-04 02:43:52 +00:00
From 3f796750b192e62701e91a95f85389f876d1059b Mon Sep 17 00:00:00 2001
From: Tom Gundersen <teg@jklm.no>
Date: Wed, 17 Sep 2014 21:44:56 +0200
Subject: [PATCH] udev: event - explicitly don't read() from invalid fd
This fixes CID #1237641.
---
src/udev/udev-event.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/src/udev/udev-event.c b/src/udev/udev-event.c
index 6b8b5a8efa..c8b142077e 100644
--- a/src/udev/udev-event.c
+++ b/src/udev/udev-event.c
@@ -494,6 +494,9 @@ static void spawn_read(struct udev_event *event,
for (i = 0; i < fdcount; i++) {
int *fd = (int *)ev[i].data.ptr;
+ if (*fd < 0)
+ continue;
+
if (ev[i].events & EPOLLIN) {
ssize_t count;
char buf[4096];