This is a note to let you know that I've just added the patch titled
staging: rtl8712: unterminated string leads to read overflow
to the 5.11-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
staging-rtl8712-unterminated-string-leads-to-read-overflow.patch
and it can be found in the queue-5.11 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From d660f4f42ccea50262c6ee90c8e7ad19a69fb225 Mon Sep 17 00:00:00 2001
From: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Date: Wed, 24 Feb 2021 11:45:59 +0300
Subject: staging: rtl8712: unterminated string leads to read overflow
From: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
commit d660f4f42ccea50262c6ee90c8e7ad19a69fb225 upstream.
The memdup_user() function does not necessarily return a NUL terminated
string so this can lead to a read overflow. Switch from memdup_user()
to strndup_user() to fix this bug.
Fixes: c6dc001f2add ("staging: r8712u: Merging Realtek's latest (v2.6.6). Various fixes.")
Cc: stable <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Link: https://lore.kernel.org/r/YDYSR+1rj26NRhvb@mwanda
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/staging/rtl8712/rtl871x_ioctl_linux.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/staging/rtl8712/rtl871x_ioctl_linux.c
+++ b/drivers/staging/rtl8712/rtl871x_ioctl_linux.c
@@ -924,7 +924,7 @@ static int r871x_wx_set_priv(struct net_
struct iw_point *dwrq = (struct iw_point *)awrq;
len = dwrq->length;
- ext = memdup_user(dwrq->pointer, len);
+ ext = strndup_user(dwrq->pointer, len);
if (IS_ERR(ext))
return PTR_ERR(ext);
Patches currently in stable-queue which might be from dan.carpenter@xxxxxxxxxx are
queue-5.11/usb-gadget-u_ether-fix-a-configfs-return-code.patch
queue-5.11/tcp-fix-sign-comparison-bug-in-getsockopt-tcp_zerocopy_receive.patch
queue-5.11/staging-rtl8192e-fix-possible-buffer-overflow-in-_rtl92e_wx_set_scan.patch
queue-5.11/staging-rtl8188eu-fix-potential-memory-corruption-in-rtw_check_beacon_data.patch
queue-5.11/staging-ks7010-prevent-buffer-overflow-in-ks_wlan_set_scan.patch
queue-5.11/staging-rtl8188eu-prevent-ssid-overflow-in-rtw_wx_set_scan.patch
queue-5.11/staging-rtl8712-unterminated-string-leads-to-read-overflow.patch
queue-5.11/staging-rtl8192u-fix-ssid-overflow-in-r8192_wx_set_scan.patch
