Re: [PATCH 3.19 091/123] gadgetfs: use-after-free in ->aio_read()

From: Alexander Holler
Date: Tue Mar 24 2015 - 14:07:14 EST


Am 24.03.2015 um 18:58 schrieb Greg Kroah-Hartman:
On Tue, Mar 24, 2015 at 06:30:17PM +0100, Alexander Holler wrote:
Am 24.03.2015 um 16:46 schrieb Greg Kroah-Hartman:
3.19-stable review patch. If anyone has any objections, please let me know.

------------------

From: Al Viro <viro@xxxxxxxxxxxxxxxxxx>

commit f01d35a15fa04162a58b95970fc01fa70ec9dacd upstream.

Just what I've thought. Please see

https://lkml.org/lkml/2015/3/15/5

I have no idea what you are asking me to do here, please be specific.

In order to not become blamed for mangling some language, here's a machine generated output:

------
wandq linux # git co -b t v3.19.2
Switched to a new branch 't'
wandq linux # git am /tmp/\[PATCH\ 3.19\ 091_123\]\ gadgetfs\:\ use-after-free\ in\ -\>aio_read\(\).eml
Applying: gadgetfs: use-after-free in ->aio_read()
wandq linux # make drivers/usb/gadget/legacy/gadgetfs.ko
(...)
CALL scripts/checksyscalls.sh
CC [M] drivers/usb/gadget/legacy/inode.o
drivers/usb/gadget/legacy/inode.c: In function 'ep_aio_rwtail':
drivers/usb/gadget/legacy/inode.c:642:12: warning: 'value' may be used uninitialized in this function [-Wmaybe-uninitialized]
ssize_t value;
^
LD [M] drivers/usb/gadget/legacy/gadgetfs.o
(...)
------

Regards,

Alexander Holler
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