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 AF6D73BAD9A; Sat, 17 Oct 2026 16:52:18 +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=1792255940; cv=none; b=Be55i8Cs/toH8s9feQ8840GFz2V6iiY1nxYwh1LrPPvEP6Ka1vNIaSsC5iugguv2G/XsDM2E4E7ZrBTWwvN9U2BTuvJ+1hGD/aJVoET0yxFPLuCVrF1rqDADthlbDGhdXbnhF4OxX7fr5J/DeQRjrXTYb4wPK51vWMZRK3qgm+s= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1792255940; c=relaxed/simple; bh=FdmXsXGMjmFK0wyMCtrMv+MCTZHqkyeyAeE4aoNPP2I=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=fnMB6oZUGh5RnYz04GHCKhyOTOd5WkjRYDLHOuvyAILgVOWN2kyWrXmPlg2Yz6peMCjEibnq2MSoSpQoiqmCX6T1BHajCv4NkpuoVilqZNyrmEUE/aidpMiTB+oID23njkAuVcmAzvVIWCFnS+PLNf+fQAe4QzGQMyAz5r1O0j8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=Z7r1gGGY; 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="Z7r1gGGY" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 12CE91F000C4; Sat, 17 Oct 2026 16:52:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1792255938; bh=TxmsUvS56a7lqSxDTXloebiKFUJOphQdltMLxHQY6o4=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=Z7r1gGGYppQHpamlGgNmG/3F6MOWgmD8XgjPpKoL3iJloE9Cj42KCBOCl50hdmp2E V3NL4feVomM1vYKlaLne4cnHo8akL4xHJtC5eIUp8wfY+Hk+rcwHbgTDPDI1V4fWf3 Uo51tVLjgjjCQIuiWd4dR8p6LQAJdt4mnkF8vfUA= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Sashiko , Nilesh Javali , "Martin K. Petersen (Oracle)" , Sasha Levin Subject: [PATCH 6.6 0029/1674] scsi: qla2xxx: Validate BSG request_len before reading vendor_cmd[] Date: Sat, 17 Oct 2026 17:38:21 +0200 Message-ID: <20261017160431.890291906@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261017160431.119607952@linuxfoundation.org> References: <20261017160431.119607952@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-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Nilesh Javali [ Upstream commit 4cf38dd9465736141263ebb63375868311a0ec81 ] The FC BSG transport allocates job->request via memdup_user() using the exact user-supplied request_len. For FC_BSG_HST_VENDOR, fc_bsg_host_dispatch() only guarantees request_len covers msgcode and vendor_id; it does not account for the vendor_cmd[] flexible array. qla2xxx then reads the command selector vendor_cmd[0] and, in several sub-handlers, vendor_cmd[1]/[2] or structures overlaid on the vendor command area without verifying request_len. A caller holding CAP_SYS_RAWIO can submit a short request whose vendor_id matches the host, triggering out-of-bounds heap reads (KASAN-detectable, and able to mis-select a command or panic). Add a central guard in qla2x00_process_vendor_specific() so the selector is always in bounds, restrict the early vendor_cmd[0] read in qla24xx_bsg_request() to sufficiently long vendor messages, and add request_len checks to the sub-handlers that read further: qla24xx_proc_fcp_prio_cfg_cmd(), qla2x00_process_loopback(), qla84xx_reset(), qla84xx_updatefw(), qla2x00_read_optrom(), qla2x00_update_optrom(), qlafx00_mgmt_cmd() and qla28xx_validate_flash_image(). Fixes: 01e0e15c8b3b ("scsi: don't use fc_bsg_job::request and fc_bsg_job::reply directly") Cc: stable@vger.kernel.org Reported-by: Sashiko Signed-off-by: Nilesh Javali Link: https://patch.msgid.link/20260730155838.2119230-31-njavali@marvell.com Signed-off-by: Martin K. Petersen (Oracle) [ adapted hunks to the existing OPTROM helper and absence of qla28xx_validate_flash_image(). ] Signed-off-by: Sasha Levin --- drivers/scsi/qla2xxx/qla_bsg.c | 45 ++++++++++++++++++++++++++++++++-- 1 file changed, 43 insertions(+), 2 deletions(-) diff --git a/drivers/scsi/qla2xxx/qla_bsg.c b/drivers/scsi/qla2xxx/qla_bsg.c index 8e859d79bdee1..0fbf6dba5a368 100644 --- a/drivers/scsi/qla2xxx/qla_bsg.c +++ b/drivers/scsi/qla2xxx/qla_bsg.c @@ -158,6 +158,12 @@ qla24xx_proc_fcp_prio_cfg_cmd(struct bsg_job *bsg_job) goto exit_fcp_prio_cfg; } + if (bsg_job->request_len < + sizeof(struct fc_bsg_request) + 2 * sizeof(uint32_t)) { + ret = -EINVAL; + goto exit_fcp_prio_cfg; + } + /* Get the sub command */ oper = bsg_request->rqst_data.h_vendor.vendor_cmd[1]; @@ -756,6 +762,10 @@ qla2x00_process_loopback(struct bsg_job *bsg_job) return -EIO; } + if (bsg_job->request_len < + sizeof(struct fc_bsg_request) + 3 * sizeof(uint32_t)) + return -EINVAL; + memset(&elreq, 0, sizeof(elreq)); elreq.req_sg_cnt = dma_map_sg(&ha->pdev->dev, @@ -988,6 +998,10 @@ qla84xx_reset(struct bsg_job *bsg_job) return -EINVAL; } + if (bsg_job->request_len < + sizeof(struct fc_bsg_request) + 2 * sizeof(uint32_t)) + return -EINVAL; + flag = bsg_request->rqst_data.h_vendor.vendor_cmd[1]; rval = qla84xx_reset_chip(vha, flag == A84_ISSUE_RESET_DIAG_FW); @@ -1032,6 +1046,10 @@ qla84xx_updatefw(struct bsg_job *bsg_job) return -EINVAL; } + if (bsg_job->request_len < + sizeof(struct fc_bsg_request) + 2 * sizeof(uint32_t)) + return -EINVAL; + sg_cnt = dma_map_sg(&ha->pdev->dev, bsg_job->request_payload.sg_list, bsg_job->request_payload.sg_cnt, DMA_TO_DEVICE); if (!sg_cnt) { @@ -1482,6 +1500,10 @@ qla2x00_read_optrom(struct bsg_job *bsg_job) struct qla_hw_data *ha = vha->hw; int rval = 0; + if (bsg_job->request_len < + sizeof(struct fc_bsg_request) + 2 * sizeof(uint32_t)) + return -EINVAL; + if (ha->flags.nic_core_reset_hdlr_active) return -EBUSY; @@ -1519,6 +1541,10 @@ qla2x00_update_optrom(struct bsg_job *bsg_job) struct qla_hw_data *ha = vha->hw; int rval = 0; + if (bsg_job->request_len < + sizeof(struct fc_bsg_request) + 2 * sizeof(uint32_t)) + return -EINVAL; + mutex_lock(&ha->optrom_mutex); rval = qla2x00_optrom_setup(bsg_job, vha, 1); if (rval) { @@ -2010,6 +2036,11 @@ qlafx00_mgmt_cmd(struct bsg_job *bsg_job) struct fc_port *fcport; char *type = "FC_BSG_HST_FX_MGMT"; + if (bsg_job->request_len < + sizeof(struct fc_bsg_request) + sizeof(uint32_t) + + sizeof(struct qla_mt_iocb_rqst_fx00)) + return -EINVAL; + /* Copy the IOCB specific information */ piocb_rqst = (struct qla_mt_iocb_rqst_fx00 *) &bsg_request->rqst_data.h_vendor.vendor_cmd[1]; @@ -2899,6 +2930,13 @@ qla2x00_process_vendor_specific(struct scsi_qla_host *vha, struct bsg_job *bsg_j { struct fc_bsg_request *bsg_request = bsg_job->request; + if (bsg_job->request_len < + sizeof(struct fc_bsg_request) + sizeof(uint32_t)) { + ql_log(ql_log_warn, vha, 0x7000, + "BSG request too small for vendor cmd.\n"); + return -EINVAL; + } + ql_dbg(ql_dbg_edif, vha, 0x911b, "%s FC_BSG_HST_VENDOR cmd[0]=0x%x\n", __func__, bsg_request->rqst_data.h_vendor.vendor_cmd[0]); @@ -3024,8 +3062,11 @@ qla24xx_bsg_request(struct bsg_job *bsg_job) } /* Disable port will bring down the chip, allow enable command */ - if (bsg_request->rqst_data.h_vendor.vendor_cmd[0] == QL_VND_MANAGE_HOST_PORT || - bsg_request->rqst_data.h_vendor.vendor_cmd[0] == QL_VND_GET_HOST_STATS) + if (bsg_request->msgcode == FC_BSG_HST_VENDOR && + bsg_job->request_len >= + sizeof(struct fc_bsg_request) + sizeof(uint32_t) && + (bsg_request->rqst_data.h_vendor.vendor_cmd[0] == QL_VND_MANAGE_HOST_PORT || + bsg_request->rqst_data.h_vendor.vendor_cmd[0] == QL_VND_GET_HOST_STATS)) goto skip_chip_chk; if (vha->hw->flags.port_isolated) { -- 2.53.0