This is a note to let you know that I've just added the patch titled

usbip: fix usbip bind writing random string after command in match_busid

to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...

The filename of the patch is: usbip-fix-usbip-bind-writing-random-string-after-command-in-match_busid.patch and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.

From 544c4605acc5ae4afe7dd5914147947db182f2fb Mon Sep 17 00:00:00 2001

From: Juan Zea juan.zea@qindel.com Date: Fri, 15 Dec 2017 10:21:20 +0100 Subject: usbip: fix usbip bind writing random string after command in match_busid

From: Juan Zea juan.zea@qindel.com

commit 544c4605acc5ae4afe7dd5914147947db182f2fb upstream.

usbip bind writes commands followed by random string when writing to match_busid attribute in sysfs, caused by using full variable size instead of string length.

Signed-off-by: Juan Zea juan.zea@qindel.com Acked-by: Shuah Khan shuahkh@osg.samsung.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- tools/usb/usbip/src/utils.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-)

--- a/tools/usb/usbip/src/utils.c +++ b/tools/usb/usbip/src/utils.c @@ -30,6 +30,7 @@ int modify_match_busid(char *busid, int char command[SYSFS_BUS_ID_SIZE + 4]; char match_busid_attr_path[SYSFS_PATH_MAX]; int rc; + int cmd_size;

snprintf(match_busid_attr_path, sizeof(match_busid_attr_path), "%s/%s/%s/%s/%s/%s", SYSFS_MNT_PATH, SYSFS_BUS_NAME, @@ -37,12 +38,14 @@ int modify_match_busid(char *busid, int attr_name);

if (add) - snprintf(command, SYSFS_BUS_ID_SIZE + 4, "add %s", busid); + cmd_size = snprintf(command, SYSFS_BUS_ID_SIZE + 4, "add %s", + busid); else - snprintf(command, SYSFS_BUS_ID_SIZE + 4, "del %s", busid); + cmd_size = snprintf(command, SYSFS_BUS_ID_SIZE + 4, "del %s", + busid);

rc = write_sysfs_attribute(match_busid_attr_path, command, - sizeof(command)); + cmd_size); if (rc < 0) { dbg("failed to write match_busid: %s", strerror(errno)); return -1;

Patches currently in stable-queue which might be from juan.zea@qindel.com are

queue-4.4/usbip-fix-usbip-bind-writing-random-string-after-command-in-match_busid.patch