* patch "staging: rtl8188eu: Fix potential overuse of kernel memory" added to staging-linus
@ 2020-02-10 18:32 gregkh
0 siblings, 0 replies; only message in thread
From: gregkh @ 2020-02-10 18:32 UTC (permalink / raw)
To: Larry.Finger, gregkh, pietroliva, stable
This is a note to let you know that I've just added the patch titled
staging: rtl8188eu: Fix potential overuse of kernel memory
to my staging git tree which can be found at
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git
in the staging-linus branch.
The patch will show up in the next release of the linux-next tree
(usually sometime within the next 24 hours during the week.)
The patch will hopefully also be merged in Linus's tree for the
next -rc kernel release.
If you have any questions about this process, please let me know.
From 4ddf8ab8d15ddbc52eefb44eb64e38466ce1f70f Mon Sep 17 00:00:00 2001
From: Larry Finger <Larry.Finger@lwfinger.net>
Date: Mon, 10 Feb 2020 12:02:32 -0600
Subject: staging: rtl8188eu: Fix potential overuse of kernel memory
In routine wpa_supplicant_ioctl(), the user-controlled p->length is
checked to be at least the size of struct ieee_param size, but the code
does not detect the case where p->length is greater than the size
of the struct, thus a malicious user could be wasting kernel memory.
Fixes commit a2c60d42d97c ("Add files for new driver - part 16").
Reported by: Pietro Oliva <pietroliva@gmail.com>
Cc: Pietro Oliva <pietroliva@gmail.com>
Cc: Stable <stable@vger.kernel.org>
Fixes commit a2c60d42d97c ("Add files for new driver - part 16").
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Link: https://lore.kernel.org/r/20200210180235.21691-4-Larry.Finger@lwfinger.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/staging/rtl8188eu/os_dep/ioctl_linux.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/staging/rtl8188eu/os_dep/ioctl_linux.c b/drivers/staging/rtl8188eu/os_dep/ioctl_linux.c
index 7d21f5799640..acca3ae8b254 100644
--- a/drivers/staging/rtl8188eu/os_dep/ioctl_linux.c
+++ b/drivers/staging/rtl8188eu/os_dep/ioctl_linux.c
@@ -2009,7 +2009,7 @@ static int wpa_supplicant_ioctl(struct net_device *dev, struct iw_point *p)
struct ieee_param *param;
uint ret = 0;
- if (p->length < sizeof(struct ieee_param) || !p->pointer) {
+ if (!p->pointer || p->length != sizeof(struct ieee_param)) {
ret = -EINVAL;
goto out;
}
--
2.25.0
^ permalink raw reply related [flat|nested] only message in thread
only message in thread, other threads:[~2020-02-10 18:32 UTC | newest]
Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-02-10 18:32 patch "staging: rtl8188eu: Fix potential overuse of kernel memory" added to staging-linus gregkh
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).