From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D71C7225417; Mon, 23 Jun 2025 22:11:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750716683; cv=none; b=qZi2Q61ru6cxqS+FcpyVPWvuPP1s7704GbSFNsPfQ27BdyY4sqT5sA80tfx18CiEzB4NxNplrB4FzvLaAxQeG9Ov3NPd5E2eF/vKpSNPjWiOn768mbr/bAJxX//2UQXk4HiHXk5u3OHkDmebs8Lfv0C+pITGFu8fwh5HoPrTSLA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750716683; c=relaxed/simple; bh=Ep6RQpVeg8C26Fvv/3TCbG4OURvcxiEFjCjBRLbi6Ok=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=lh1E2fTf3KZsjimQXWLw/HzmO3xVI7mPOsnvs9PqIfYiH/+CrQW5z2TZ4WmnEfdn3kQ66ZvvOB8q/9ydbRQ8FHQL1azTIUQdsgruiuyNnqx/o1M6RLc8XaqRiFP16zemtahUhyxpxkkiKPyXsr89bHvib77r0OKrEoB6yY6V7IA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=Q7nmP0sG; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="Q7nmP0sG" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7071DC4CEEA; Mon, 23 Jun 2025 22:11:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1750716683; bh=Ep6RQpVeg8C26Fvv/3TCbG4OURvcxiEFjCjBRLbi6Ok=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Q7nmP0sGljqb+8sWtjGGYAUMi6uk9f5eKCs+x8HSm0oIv8633V6A3rPxUTDFWi9o+ hvUPSestuNrNWFMe60Kbb1/q0WjY0Z5QGCyZRs75CdlkJEahPbyF5pnfgJeIyjKMrr Zk7fi4bgz/cc4d+zN3Js9j4FxDdSF85cCIExIccM= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Alexey Kodanev , Jacob Keller , Rengarajan S , Paolo Abeni , Sasha Levin Subject: [PATCH 6.15 547/592] net: lan743x: fix potential out-of-bounds write in lan743x_ptp_io_event_clock_get() Date: Mon, 23 Jun 2025 15:08:25 +0200 Message-ID: <20250623130713.452918674@linuxfoundation.org> X-Mailer: git-send-email 2.50.0 In-Reply-To: <20250623130700.210182694@linuxfoundation.org> References: <20250623130700.210182694@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Alexey Kodanev [ Upstream commit e353b0854d3a1a31cb061df8d022fbfea53a0f24 ] Before calling lan743x_ptp_io_event_clock_get(), the 'channel' value is checked against the maximum value of PCI11X1X_PTP_IO_MAX_CHANNELS(8). This seems correct and aligns with the PTP interrupt status register (PTP_INT_STS) specifications. However, lan743x_ptp_io_event_clock_get() writes to ptp->extts[] with only LAN743X_PTP_N_EXTTS(4) elements, using channel as an index: lan743x_ptp_io_event_clock_get(..., u8 channel,...) { ... /* Update Local timestamp */ extts = &ptp->extts[channel]; extts->ts.tv_sec = sec; ... } To avoid an out-of-bounds write and utilize all the supported GPIO inputs, set LAN743X_PTP_N_EXTTS to 8. Detected using the static analysis tool - Svace. Fixes: 60942c397af6 ("net: lan743x: Add support for PTP-IO Event Input External Timestamp (extts)") Signed-off-by: Alexey Kodanev Reviewed-by: Jacob Keller Acked-by: Rengarajan S Link: https://patch.msgid.link/20250616113743.36284-1-aleksei.kodanev@bell-sw.com Signed-off-by: Paolo Abeni Signed-off-by: Sasha Levin --- drivers/net/ethernet/microchip/lan743x_ptp.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/microchip/lan743x_ptp.h b/drivers/net/ethernet/microchip/lan743x_ptp.h index 0d29914cd4606..225e8232474d7 100644 --- a/drivers/net/ethernet/microchip/lan743x_ptp.h +++ b/drivers/net/ethernet/microchip/lan743x_ptp.h @@ -18,9 +18,9 @@ */ #define LAN743X_PTP_N_EVENT_CHAN 2 #define LAN743X_PTP_N_PEROUT LAN743X_PTP_N_EVENT_CHAN -#define LAN743X_PTP_N_EXTTS 4 -#define LAN743X_PTP_N_PPS 0 #define PCI11X1X_PTP_IO_MAX_CHANNELS 8 +#define LAN743X_PTP_N_EXTTS PCI11X1X_PTP_IO_MAX_CHANNELS +#define LAN743X_PTP_N_PPS 0 #define PTP_CMD_CTL_TIMEOUT_CNT 50 struct lan743x_adapter; -- 2.39.5