From 4b19b2db78b73ae404902e0592758e55666a850d Mon Sep 17 00:00:00 2001 From: Stefan Lippers-Hollmann Date: Sat, 27 Feb 2021 23:55:08 +0100 Subject: hostapd: P2P: Fix a corner case in peer addition based on PD Request p2p_add_device() may remove the oldest entry if there is no room in the peer table for a new peer. This would result in any pointer to that removed entry becoming stale. A corner case with an invalid PD Request frame could result in such a case ending up using (read+write) freed memory. This could only by triggered when the peer table has reached its maximum size and the PD Request frame is received from the P2P Device Address of the oldest remaining entry and the frame has incorrect P2P Device Address in the payload. Fix this by fetching the dev pointer again after having called p2p_add_device() so that the stale pointer cannot be used. This fixes the following security vulnerabilities/bugs: - CVE-2021-27803 - A vulnerability was discovered in how p2p/p2p_pd.c in wpa_supplicant before 2.10 processes P2P (Wi-Fi Direct) provision discovery requests. It could result in denial of service or other impact (potentially execution of arbitrary code), for an attacker within radio range. Fixes: 17bef1e97a50 ("P2P: Add peer entry based on Provision Discovery Request") Signed-off-by: Jouni Malinen Signed-off-by: Stefan Lippers-Hollmann (cherry picked from commit 1ca5de13a153061feae260864d73d96f7c463785) --- package/network/services/hostapd/Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'package/network/services/hostapd/Makefile') diff --git a/package/network/services/hostapd/Makefile b/package/network/services/hostapd/Makefile index a4002f7ed7..75615efd9b 100644 --- a/package/network/services/hostapd/Makefile +++ b/package/network/services/hostapd/Makefile @@ -7,7 +7,7 @@ include $(TOPDIR)/rules.mk PKG_NAME:=hostapd -PKG_RELEASE:=6 +PKG_RELEASE:=7 PKG_SOURCE_URL:=http://w1.fi/hostap.git PKG_SOURCE_PROTO:=git -- cgit v1.2.3