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 C5C47313E34 for ; Sat, 30 May 2026 20:07:42 +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=1780171665; cv=none; b=DzA0JKxYFQKBiDaWyXDLRoB+d6CZq/TXuhWXN0h6zP653qruBbweQ/4TbfTOF7ZXouzfFap6KeG6zS68Vp/ojy71cYwCnk1TweBhTgDO488wZP0Pfl4pHSh4huvM30gK1j4d/yGpeWNZ6+9+nFFqLC+EAHBxcO5KS5cBxgBKEXU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780171665; c=relaxed/simple; bh=LFot29Qw6CRWP8SGoS7eQ4rjaq/Uwo2oU9EYJY1uaBI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=AyelTSIPfbyAPRIkQ8axqnrGdYGyDJXSl1U1wVvMZRDzEOWbIxihqFsjqG1wFaQLhBuNKBaY+UJlV+tF5PdPEeb3IlJAmSx0RUFaHiWksXCIMvxRuQ4wZ/xxfU57lgBIXGdW5oLFiiRUXPsC64xi1++zAQ6d0oRrV6DYAklJt3Y= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=W66M3aZs; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="W66M3aZs" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5D52F1F00893; Sat, 30 May 2026 20:07:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1780171662; bh=ZoDutvNpSkZHU5p2AGcxtX0W1/mJFeSkqhEBm8eDRjA=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=W66M3aZsdqPn6sqe+/g/I1ngYy1Sxos0wdNxnIt7UkzsNfgzQDO8F9mZ5lPxjSMl2 5Lx5ptike8O2O6xJgNyvF+on3Iczj4wOgaBbkz0H7kGLqn4EqybvZZvf969KDz+Bzd jPuMz4M93F5g4WG2i1EVMRt436RRp7Kro99WVWZ4hM51vbnvE1vz2zF2u6XyIWv060 Rh0tTbmQuAmeuSssH3occ30LSBBPh+sObljZsnMBEdF4nhApHZJ3VzRX63Jk2bnXaq e5uaS4EmHTdq35bHtxAk4/lOi2wszEXWG7TPBFQpx1M86Pkecce1TvTR6Fw8BSGp1U CF6AQclniT56A== From: Sasha Levin To: stable@vger.kernel.org Cc: Sam Daly , Sunil Goutham , Linu Cherian , Geetha sowjanya , hariprasad , Subbaraya Sundeep , Andrew Lunn , stable , Greg Kroah-Hartman , Jakub Kicinski , Sasha Levin Subject: [PATCH 5.15.y] octeontx2-af: CGX: add bounds check to cgx_speed_mbps index Date: Sat, 30 May 2026 16:07:39 -0400 Message-ID: <20260530200739.3283536-1-sashal@kernel.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <2026052832-gigahertz-crumb-cbe0@gregkh> References: <2026052832-gigahertz-crumb-cbe0@gregkh> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Sam Daly [ Upstream commit c0bf0a4f3f1f5f57aa83e1400ba4f56f0abfd542 ] 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: Sasha Levin --- drivers/net/ethernet/marvell/octeontx2/af/cgx.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/marvell/octeontx2/af/cgx.c b/drivers/net/ethernet/marvell/octeontx2/af/cgx.c index d97a4123438f0..d926577615869 100644 --- a/drivers/net/ethernet/marvell/octeontx2/af/cgx.c +++ b/drivers/net/ethernet/marvell/octeontx2/af/cgx.c @@ -1096,10 +1096,13 @@ static inline void link_status_user_format(u64 lstat, struct cgx *cgx, u8 lmac_id) { const char *lmac_string; + 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)]; + speed = FIELD_GET(RESP_LINKSTAT_SPEED, lstat); + linfo->speed = speed < ARRAY_SIZE(cgx_speed_mbps) ? + cgx_speed_mbps[speed] : 0; linfo->an = FIELD_GET(RESP_LINKSTAT_AN, lstat); linfo->fec = FIELD_GET(RESP_LINKSTAT_FEC, lstat); linfo->lmac_type_id = cgx_get_lmac_type(cgx, lmac_id); -- 2.53.0