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 CA0DD3B27D1; Sat, 12 Sep 2026 18:31:39 +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=1789237903; cv=none; b=iYkgbLd5m0NFbCEN6b4JBMkkiVhbc0Y7SC+KNOGytpP2nxn/AGqXDew8V3DR0hq/tqvuY3SfWY2flwnI7XbH7TVFP4t//q7dTNmHz0gD3w6bey6P6+hoQ4i8fgXrUFLWjP2Hx9TAM/zwC1IOPLq7NM4CbpNQWch/w0ePfmMXfIw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789237903; c=relaxed/simple; bh=IjwpO/9RsPoKQ8hKoLIfCBTDeM0Fidwug44LBgT19mg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Y19zSRziT4GDC+iquM8majPc39KuOZSzfsRvw5Ov0tBKz3ZnGU8fH3Gw7Pkzuql4nTlu6U2k1Oj7LhHiQVKm/mI9LURLSrx5vU7ScBlELZjPbqGzKgYi4NVETNc+ykLNEHHXxUdvPso/yP5zZpbeZwsR5zL7y3DB03QgndC+3kw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=Qik9aCoM; 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="Qik9aCoM" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 33E601F000FF; Sat, 12 Sep 2026 18:31:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1789237898; bh=Xj1cA+3Q84dK1oJMwcdOSkaGCpGrMgVa1PHBmCz+JoE=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=Qik9aCoMlBZBBovngiuJMmBo2bQbZRY776Fdt/1OS0KyYty12W75kA9+ao/nvMeii Tr6OnQLuNoyKqv2duyL0BdZYW6Kt5WzE6j2mWbR87SLKHhU1TtOsB2Nr4oZa8Jidwl H2EybutH10zd1Hev/nKm2I8dumN1FfYZWN/UBXdM= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Sashiko , Nilesh Javali , "Martin K. Petersen (Oracle)" Subject: [PATCH 5.15 350/935] scsi: qla2xxx: Bound rsp_info_len to avoid OOB sense-data read Date: Sat, 12 Sep 2026 08:56:20 +0200 Message-ID: <20260912065534.835452823@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260912065526.833703348@linuxfoundation.org> References: <20260912065526.833703348@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 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Nilesh Javali commit ca6d880d6c70cb7946e7b3e05d7285f271b6d99e upstream. In qla2x00_status_entry(), the FWI2 status path advances sense_data and shrinks par_sense_len by rsp_info_len: if (IS_FWI2_CAPABLE(ha)) { sense_data += rsp_info_len; par_sense_len -= rsp_info_len; } rsp_info_len is a 32-bit value taken directly from the target's FCP response (sf.rsp_data_len), while par_sense_len is the IOCB data area size (28 bytes for 24xx, 60 bytes for 29xx). A hostile or buggy target reporting an rsp_info_len larger than par_sense_len makes the unsigned subtraction underflow to a huge value and advances sense_data out of bounds. The underflowed par_sense_len then defeats the cap in qla2x00_handle_sense(): if (sense_len > par_sense_len) sense_len = par_sense_len; memcpy(cp->sense_buffer, sense_data, sense_len); so the memcpy reads up to SCSI_SENSE_BUFFERSIZE bytes from the out-of-bounds sense_data pointer, leaking adjacent response-ring/heap memory into the command's sense buffer. Clamp rsp_info_len to par_sense_len before the subtraction so par_sense_len can never underflow and sense_data stays within the IOCB data area. The fix sits before the comp_status switch, covering both qla2x00_handle_sense() call sites. Fixes: 5544213be7b4 ("[SCSI] qla2xxx: Correct extended sense-data handling.") Cc: stable@vger.kernel.org Reported-by: Sashiko Signed-off-by: Nilesh Javali Link: https://patch.msgid.link/20260730155838.2119230-16-njavali@marvell.com Signed-off-by: Martin K. Petersen (Oracle) Signed-off-by: Greg Kroah-Hartman --- drivers/scsi/qla2xxx/qla_isr.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) --- a/drivers/scsi/qla2xxx/qla_isr.c +++ b/drivers/scsi/qla2xxx/qla_isr.c @@ -3308,6 +3308,18 @@ qla2x00_status_entry(scsi_qla_host_t *vh if (scsi_status & SS_RESPONSE_INFO_LEN_VALID) { /* Sense data lies beyond any FCP RESPONSE data. */ if (IS_FWI2_CAPABLE(ha)) { + /* + * A hostile or buggy target may report an + * rsp_info_len larger than the IOCB data area. + * Clamp it so the par_sense_len subtraction cannot + * underflow and walk sense_data out of bounds. + */ + if (rsp_info_len > par_sense_len) { + ql_log(ql_log_warn, fcport->vha, 0x3107, + "Truncating bogus rsp_info_len 0x%x to 0x%x.\n", + rsp_info_len, par_sense_len); + rsp_info_len = par_sense_len; + } sense_data += rsp_info_len; par_sense_len -= rsp_info_len; }