This is a note to let you know that I've just added the patch titled
HID: picolcd_core: validate output report details
to the 3.11-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:
hid-picolcd_core-validate-output-report-details.patch
and it can be found in the queue-3.11 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 1e87a2456b0227ca4ab881e19a11bb99d164e792 Mon Sep 17 00:00:00 2001
From: Kees Cook <keescook@xxxxxxxxxxxx>
Date: Wed, 28 Aug 2013 22:31:52 +0200
Subject: HID: picolcd_core: validate output report details
From: Kees Cook <keescook@xxxxxxxxxxxx>
commit 1e87a2456b0227ca4ab881e19a11bb99d164e792 upstream.
A HID device could send a malicious output report that would cause the
picolcd HID driver to trigger a NULL dereference during attr file writing.
[jkosina@xxxxxxx: changed
report->maxfield < 1
to
report->maxfield != 1
as suggested by Bruno].
CVE-2013-2899
Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx>
Reviewed-by: Bruno Prémont <bonbons@xxxxxxxxxxxxxxxxx>
Acked-by: Bruno Prémont <bonbons@xxxxxxxxxxxxxxxxx>
Signed-off-by: Jiri Kosina <jkosina@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/hid/hid-picolcd_core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/hid/hid-picolcd_core.c
+++ b/drivers/hid/hid-picolcd_core.c
@@ -290,7 +290,7 @@ static ssize_t picolcd_operation_mode_st
buf += 10;
cnt -= 10;
}
- if (!report)
+ if (!report || report->maxfield != 1)
return -EINVAL;
while (cnt > 0 && (buf[cnt-1] == '\n' || buf[cnt-1] == '\r'))
Patches currently in stable-queue which might be from keescook@xxxxxxxxxxxx are
queue-3.11/hid-sensor-hub-validate-feature-report-details.patch
queue-3.11/hid-picolcd_core-validate-output-report-details.patch
queue-3.11/hid-validate-hid-report-id-size.patch
queue-3.11/hid-pantherlord-validate-output-report-details.patch
queue-3.11/crypto-api-fix-race-condition-in-larval-lookup.patch
queue-3.11/hid-check-for-null-field-when-setting-values.patch
queue-3.11/hid-ntrig-validate-feature-report-details.patch
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