aboutsummaryrefslogtreecommitdiff
path: root/gnu/packages/patches/qemu-CVE-2018-16872.patch
diff options
context:
space:
mode:
Diffstat (limited to 'gnu/packages/patches/qemu-CVE-2018-16872.patch')
-rw-r--r--gnu/packages/patches/qemu-CVE-2018-16872.patch88
1 files changed, 0 insertions, 88 deletions
diff --git a/gnu/packages/patches/qemu-CVE-2018-16872.patch b/gnu/packages/patches/qemu-CVE-2018-16872.patch
deleted file mode 100644
index 094e823ee4..0000000000
--- a/gnu/packages/patches/qemu-CVE-2018-16872.patch
+++ /dev/null
@@ -1,88 +0,0 @@
-Fixes CVE-2018-16872:
-
-https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-16872
-
-Patch copied from upstream source repository:
-
-https://git.qemu.org/?p=qemu.git;a=commitdiff;h=bab9df35ce73d1c8e19a37e2737717ea1c984dc1
-
-From bab9df35ce73d1c8e19a37e2737717ea1c984dc1 Mon Sep 17 00:00:00 2001
-From: Gerd Hoffmann <kraxel@redhat.com>
-Date: Thu, 13 Dec 2018 13:25:11 +0100
-Subject: [PATCH] usb-mtp: use O_NOFOLLOW and O_CLOEXEC.
-
-Open files and directories with O_NOFOLLOW to avoid symlinks attacks.
-While being at it also add O_CLOEXEC.
-
-usb-mtp only handles regular files and directories and ignores
-everything else, so users should not see a difference.
-
-Because qemu ignores symlinks, carrying out a successful symlink attack
-requires swapping an existing file or directory below rootdir for a
-symlink and winning the race against the inotify notification to qemu.
-
-Fixes: CVE-2018-16872
-Cc: Prasad J Pandit <ppandit@redhat.com>
-Cc: Bandan Das <bsd@redhat.com>
-Reported-by: Michael Hanselmann <public@hansmi.ch>
-Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
-Reviewed-by: Michael Hanselmann <public@hansmi.ch>
-Message-id: 20181213122511.13853-1-kraxel@redhat.com
----
- hw/usb/dev-mtp.c | 13 +++++++++----
- 1 file changed, 9 insertions(+), 4 deletions(-)
-
-diff --git a/hw/usb/dev-mtp.c b/hw/usb/dev-mtp.c
-index 100b7171f4..36c43b8c20 100644
---- a/hw/usb/dev-mtp.c
-+++ b/hw/usb/dev-mtp.c
-@@ -653,13 +653,18 @@ static void usb_mtp_object_readdir(MTPState *s, MTPObject *o)
- {
- struct dirent *entry;
- DIR *dir;
-+ int fd;
-
- if (o->have_children) {
- return;
- }
- o->have_children = true;
-
-- dir = opendir(o->path);
-+ fd = open(o->path, O_DIRECTORY | O_CLOEXEC | O_NOFOLLOW);
-+ if (fd < 0) {
-+ return;
-+ }
-+ dir = fdopendir(fd);
- if (!dir) {
- return;
- }
-@@ -1007,7 +1012,7 @@ static MTPData *usb_mtp_get_object(MTPState *s, MTPControl *c,
-
- trace_usb_mtp_op_get_object(s->dev.addr, o->handle, o->path);
-
-- d->fd = open(o->path, O_RDONLY);
-+ d->fd = open(o->path, O_RDONLY | O_CLOEXEC | O_NOFOLLOW);
- if (d->fd == -1) {
- usb_mtp_data_free(d);
- return NULL;
-@@ -1031,7 +1036,7 @@ static MTPData *usb_mtp_get_partial_object(MTPState *s, MTPControl *c,
- c->argv[1], c->argv[2]);
-
- d = usb_mtp_data_alloc(c);
-- d->fd = open(o->path, O_RDONLY);
-+ d->fd = open(o->path, O_RDONLY | O_CLOEXEC | O_NOFOLLOW);
- if (d->fd == -1) {
- usb_mtp_data_free(d);
- return NULL;
-@@ -1658,7 +1663,7 @@ static void usb_mtp_write_data(MTPState *s)
- 0, 0, 0, 0);
- goto done;
- }
-- d->fd = open(path, O_CREAT | O_WRONLY, mask);
-+ d->fd = open(path, O_CREAT | O_WRONLY | O_CLOEXEC | O_NOFOLLOW, mask);
- if (d->fd == -1) {
- usb_mtp_queue_result(s, RES_STORE_FULL, d->trans,
- 0, 0, 0, 0);
---
-2.20.1
-