From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 DF4E1313539; Thu, 28 May 2026 20:37:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780000673; cv=none; b=EDAod0lDZGPHTCCYeeNYuQ4bNNQWMLnts2tg9cPbxD3G8IIWWswDaTRNWAqdnZyqoxi2Q2/F9fhqAN9uA6jATlfZEMJiYW2hoiCK1/0EBxQwqX0z09+suKkr84l3XcGNN3vfpLVHv0D9YXJF32WRQILxn2YQtUadQTuQrVikzKY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780000673; c=relaxed/simple; bh=DV6b5AKaIpCzbdN/HalwiuWPRYkH6JyZVKgihIRRHKA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=YwnbeSBYSljU89pXjCYKM4jSbtf6XumTqZsmm3wu2HHz4ySDRq8c2QBlrg1N+sGHkyE2PiMCNoOpr8zIiqLDXX6PMYsMhQD52BN2Cn3huj/84yv4CoPpFyH77sJ7+1XxWYFkAz6ca3If5FoWxTErabe/idTHkldwnIciS6GwHCc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=MPOXg0xM; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="MPOXg0xM" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4C9CB1F000E9; Thu, 28 May 2026 20:37:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1780000672; bh=Lv0M0TzP4KI0gpm4PI7tsq2H2QZFnewMnNRiASsvOUE=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=MPOXg0xMDLAJpoaO1EfWHejUxgFyT7TUKVdN/h1MDWjJh+KTktP9ZHAU7JkcKkQeq QPBhnfXXPRYCTlHWeKb+wvDkJ60Jc1x16i0iBNUj2uuMO+uo+xvSgpaNIJV1wpUvoL m70z7w0Rj9m5/rvpb6u8QB2CM6ELXUziSrBtfJYg= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Sunil Goutham , Linu Cherian , Geetha sowjanya , hariprasad , Subbaraya Sundeep , Andrew Lunn , stable , Sam Daly , Jakub Kicinski Subject: [PATCH 6.12 092/272] octeontx2-af: CGX: add bounds check to cgx_speed_mbps index Date: Thu, 28 May 2026 21:47:46 +0200 Message-ID: <20260528194631.955873392@linuxfoundation.org> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260528194629.379955525@linuxfoundation.org> References: <20260528194629.379955525@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 6.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Sam Daly commit c0bf0a4f3f1f5f57aa83e1400ba4f56f0abfd542 upstream. cgx_speed_mbps has 13 elements but RESP_LINKSTAT_SPEED can yield values 0-15. If it returns a value >= 13, this causes an out-of-bounds array access. Add a bounds check and default to speed 0 if the index is out of range. Fixes: 61071a871ea6 ("octeontx2-af: Forward CGX link notifications to PFs") Cc: Sunil Goutham Cc: Linu Cherian Cc: Geetha sowjanya Cc: hariprasad Cc: Subbaraya Sundeep Cc: Andrew Lunn Cc: stable Signed-off-by: Sam Daly Signed-off-by: Greg Kroah-Hartman Link: https://patch.msgid.link/2026051352-refined-demise-e88d@gregkh Signed-off-by: Jakub Kicinski Signed-off-by: Greg Kroah-Hartman --- drivers/net/ethernet/marvell/octeontx2/af/cgx.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) --- a/drivers/net/ethernet/marvell/octeontx2/af/cgx.c +++ b/drivers/net/ethernet/marvell/octeontx2/af/cgx.c @@ -1286,13 +1286,18 @@ static inline void link_status_user_form struct cgx_link_user_info *linfo, struct cgx *cgx, u8 lmac_id) { + unsigned int speed; + linfo->link_up = FIELD_GET(RESP_LINKSTAT_UP, lstat); linfo->full_duplex = FIELD_GET(RESP_LINKSTAT_FDUPLEX, lstat); - linfo->speed = cgx_speed_mbps[FIELD_GET(RESP_LINKSTAT_SPEED, lstat)]; linfo->an = FIELD_GET(RESP_LINKSTAT_AN, lstat); linfo->fec = FIELD_GET(RESP_LINKSTAT_FEC, lstat); linfo->lmac_type_id = FIELD_GET(RESP_LINKSTAT_LMAC_TYPE, lstat); + speed = FIELD_GET(RESP_LINKSTAT_SPEED, lstat); + linfo->speed = speed < ARRAY_SIZE(cgx_speed_mbps) ? + cgx_speed_mbps[speed] : 0; + if (linfo->lmac_type_id >= LMAC_MODE_MAX) { dev_err(&cgx->pdev->dev, "Unknown lmac_type_id %d reported by firmware on cgx port%d:%d", linfo->lmac_type_id, cgx->cgx_id, lmac_id);