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 27B8B381E91 for ; Fri, 11 Sep 2026 14:50:52 +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=1789138254; cv=none; b=MfhWZoN70tlxzgz+aWzh1dtyzhYvJvB+YTJsTVV20Ulf1U/V2CpRhRynxAQpkJFRUve3oSEWdxYdS4V+HwrfgGzS59vbXR7V/94qePpL8St47o5/IwWRTE+0ucQbXbQWZhWFBbnj0bBvJ1hilLemYtXtOktsgo3kGiIP6EuCSWo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789138254; c=relaxed/simple; bh=KtTT8ZBN5fSHB8C+yQLf9qubdmVIk1UB6AiBviSef9A=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=qHJc1+cvHa/G6KlT/5MsLU6GAUYdpFyCswpvGqXD3Ur7/3Lrbj84UtQPLBp8iKWwFHkvjUGvjWOo/r3lI+9ZmturqM+BaE4aCZbBWqlLvamdNCAr/TEqdhrK3rRMJMcMNO62YMYEA4o1Ak9/sYwF1iZYonsHEU+HRWRBKkYdx0M= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=gD0OAJet; 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="gD0OAJet" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3A16A1F000FF; Fri, 11 Sep 2026 14:50:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1789138252; bh=FQnaj04CBfTwCZEhsqqGEG0CRE0BpvYM8289tq9JYfA=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=gD0OAJetBKg03anTQCceKbwbsmqYyY4i98qvK/Z0zoR2Lo+qF8UXT+gA7mlsJOrUi VG7IqEy0DZsLZ8ntq1za8fJpQCMWGipDWuuv/ukbPI6POOwGisQuRHlWaj09MyDtIz I8v/quLwbtmYHrH4mpJ9SBHf3jnCEFEO1a9/os5qYiiwWTRsaij+Sd1Oqcm3VOSG2z yBQRKX7qXASaKRRvaWfuPRgGMR95VrdsjvcoI2Fp+gorB5NOYQT9JADdXYwVDAoOfs DYoinFJRA3YdpK2Qe8Pl7mZ2zntwC6fXkJkn9HnjUVoCFjVlqFZY2zhl1HKWjCBFiG K9732BX3J4zyQ== From: Sasha Levin To: stable@vger.kernel.org Cc: Nilesh Javali , Hannes Reinecke , "Martin K. Petersen (Oracle)" , Sasha Levin Subject: [PATCH 7.2.y] scsi: qla2xxx: Bound VP index against VP_CTRL IOCB bitmap size Date: Fri, 11 Sep 2026 10:50:50 -0400 Message-ID: <20260911145050.984607-1-sashal@kernel.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <2026090911-blush-chaffing-3a1b@gregkh> References: <2026090911-blush-chaffing-3a1b@gregkh> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Nilesh Javali [ Upstream commit 878613ecb5a36db26859c4fd83daf9283a334fa2 ] The VP control IOCB selects its target virtual port by setting one bit in vp_idx_map, a fixed 16-byte (128-bit) array in both vp_ctrl_entry_24xx and vp_ctrl_entry_24xx_ext. qla25xx_ctrlvp_iocb() computes map = (vp_index - 1) / 8 and writes vce->vp_idx_map[map] without checking that map stays within the array. max_npiv_vports is taken from firmware and only sanitized to a MIN_MULTI_ID_FABRIC-aligned boundary, so it can legitimately be 191 or 255, and qla24xx_control_vp() only rejects vp_index >= max_npiv_vports. A vp_index above 128 therefore yields map >= 16 and an out-of-bounds write of up to 16 bytes past vp_idx_map, corrupting the trailing IOCB fields (or the adjacent request-ring slot on the 64-byte layout). Reject a vp_index that cannot be represented in the IOCB bitmap in qla24xx_control_vp(), and add a defensive ARRAY_SIZE() guard in qla25xx_ctrlvp_iocb() before the write. Adapters that report the usual 63 or 127 NPIV vports are unaffected. Fixes: 2853192e154b ("scsi: qla2xxx: Use IOCB path to submit Control VP MBX command") Cc: stable@vger.kernel.org Signed-off-by: Nilesh Javali Reviewed-by: Hannes Reinecke Link: https://patch.msgid.link/20260723050413.3897522-49-njavali@marvell.com Signed-off-by: Martin K. Petersen (Oracle) [ Adjusted guard placement in qla25xx_ctrlvp_iocb() to match the older initialization order. ] Signed-off-by: Sasha Levin --- drivers/scsi/qla2xxx/qla_iocb.c | 6 ++++++ drivers/scsi/qla2xxx/qla_mid.c | 8 ++++++++ 2 files changed, 14 insertions(+) diff --git a/drivers/scsi/qla2xxx/qla_iocb.c b/drivers/scsi/qla2xxx/qla_iocb.c index dbe3cd4e274c8..64f5e1cd75591 100644 --- a/drivers/scsi/qla2xxx/qla_iocb.c +++ b/drivers/scsi/qla2xxx/qla_iocb.c @@ -3826,6 +3826,12 @@ qla25xx_ctrlvp_iocb(srb_t *sp, struct vp_ctrl_entry_24xx *vce) */ map = (sp->u.iocb_cmd.u.ctrlvp.vp_index - 1) / 8; pos = (sp->u.iocb_cmd.u.ctrlvp.vp_index - 1) & 7; + if (map >= ARRAY_SIZE(vce->vp_idx_map)) { + ql_log(ql_log_warn, sp->vha, 0x307c, + "ctrlvp: vp_index %u exceeds vp_idx_map capacity\n", + sp->u.iocb_cmd.u.ctrlvp.vp_index); + return; + } vce->vp_idx_map[map] |= 1 << pos; } diff --git a/drivers/scsi/qla2xxx/qla_mid.c b/drivers/scsi/qla2xxx/qla_mid.c index c563133f751e8..7071c419eb4fd 100644 --- a/drivers/scsi/qla2xxx/qla_mid.c +++ b/drivers/scsi/qla2xxx/qla_mid.c @@ -957,6 +957,14 @@ int qla24xx_control_vp(scsi_qla_host_t *vha, int cmd) if (vp_index == 0 || vp_index >= ha->max_npiv_vports) return QLA_PARAMETER_ERROR; + /* + * The VP_CTRL IOCB selects the target VP through a fixed 128-bit + * (16-byte) vp_idx_map bitmap, so vp_index must fit within it even + * if firmware advertises more NPIV vports. + */ + if (vp_index > sizeof_field(struct vp_ctrl_entry_24xx, vp_idx_map) * 8) + return QLA_PARAMETER_ERROR; + /* ref: INIT */ sp = qla2x00_get_sp(base_vha, NULL, GFP_KERNEL); if (!sp) -- 2.53.0