lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Message-Id: <20191004160227.31577-1-colin.king@canonical.com>
Date:   Fri,  4 Oct 2019 17:02:27 +0100
From:   Colin King <colin.king@...onical.com>
To:     Kalle Valo <kvalo@...eaurora.org>,
        "David S . Miller" <davem@...emloft.net>,
        ath10k@...ts.infradead.org, linux-wireless@...r.kernel.org,
        netdev@...r.kernel.org
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH][next] ath10k: fix null dereference on pointer crash_data

From: Colin Ian King <colin.king@...onical.com>

Currently when pointer crash_data is null the present null check
will also check that crash_data->ramdump_buf is null and will cause
a null pointer dereference on crash_data. Fix this by using the ||
operator instead of &&.

Fixes: 3f14b73c3843 ("ath10k: Enable MSA region dump support for WCN3990")
Signed-off-by: Colin Ian King <colin.king@...onical.com>
---
 drivers/net/wireless/ath/ath10k/snoc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/wireless/ath/ath10k/snoc.c b/drivers/net/wireless/ath/ath10k/snoc.c
index cd22c8654aa9..16177497bba7 100644
--- a/drivers/net/wireless/ath/ath10k/snoc.c
+++ b/drivers/net/wireless/ath/ath10k/snoc.c
@@ -1400,7 +1400,7 @@ static void ath10k_msa_dump_memory(struct ath10k *ar,
 	size_t buf_len;
 	u8 *buf;
 
-	if (!crash_data && !crash_data->ramdump_buf)
+	if (!crash_data || !crash_data->ramdump_buf)
 		return;
 
 	mem_layout = ath10k_coredump_get_mem_layout(ar);
-- 
2.20.1

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ