From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 1F4221419A1; Tue, 27 Feb 2024 14:05:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709042713; cv=none; b=hCZWHhK2E6ADCOECtZWdwvxYUqyxUcl5/edzASaKDpCvxLZZcWwQFyUw/a25Id/gQVoBm8v6kqtoKSp9GxEolOIqnihs87aTOFEKeQkZtAB4Tg/EbWYGB75DlbunTZ4hpbNOPfaRirPhbrOOgplRlQjAQdJNW0XmzfxZgQniyS0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709042713; c=relaxed/simple; bh=MTS46WMYofkUn32+4IqLCYXBXircB8TkmPE0xRm6UKY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=WABBUrQbWH/DGXXM/qd9tr0SWA8peHVYnvGEOvgF2GnTc2gznWd026B7ll7eGnZF33PMF1lU5fZnXf2VZuQBJpRg+oHyLJBa01L7dhUuFRPKFwVRoljxcab755SluSg+mP08rYJAtIENf+3jCpDx1kPr2ozW1IAeLwUWsL4vDDI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=SFDyCl2E; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="SFDyCl2E" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 54AC7C433F1; Tue, 27 Feb 2024 14:05:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1709042712; bh=MTS46WMYofkUn32+4IqLCYXBXircB8TkmPE0xRm6UKY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=SFDyCl2ED80K3MI3gaFnvFiMUYSZxZIISHC7yI/wRaP72MkNvKnZvVF/BqZ1fGgkN sP/LEeSfPUlgwpShBrAU4NcL4bel1kanzFtKNmGXc1pxv3Ay0LGMPk8QlNmWqRZWbb 6WgqSJOlS7jkFVC2Sxsq+OeIfpk/oKds7ByshuM8= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Andrew Bresticker , Ard Biesheuvel , Sasha Levin Subject: [PATCH 5.15 065/245] efi: runtime: Fix potential overflow of soft-reserved region size Date: Tue, 27 Feb 2024 14:24:13 +0100 Message-ID: <20240227131617.356154947@linuxfoundation.org> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240227131615.098467438@linuxfoundation.org> References: <20240227131615.098467438@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org 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: Andrew Bresticker [ Upstream commit de1034b38a346ef6be25fe8792f5d1e0684d5ff4 ] md_size will have been narrowed if we have >= 4GB worth of pages in a soft-reserved region. Signed-off-by: Andrew Bresticker Signed-off-by: Ard Biesheuvel Signed-off-by: Sasha Levin --- drivers/firmware/efi/arm-runtime.c | 2 +- drivers/firmware/efi/riscv-runtime.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/firmware/efi/arm-runtime.c b/drivers/firmware/efi/arm-runtime.c index 3359ae2adf24b..9054c2852580d 100644 --- a/drivers/firmware/efi/arm-runtime.c +++ b/drivers/firmware/efi/arm-runtime.c @@ -107,7 +107,7 @@ static int __init arm_enable_runtime_services(void) efi_memory_desc_t *md; for_each_efi_memory_desc(md) { - int md_size = md->num_pages << EFI_PAGE_SHIFT; + u64 md_size = md->num_pages << EFI_PAGE_SHIFT; struct resource *res; if (!(md->attribute & EFI_MEMORY_SP)) diff --git a/drivers/firmware/efi/riscv-runtime.c b/drivers/firmware/efi/riscv-runtime.c index d28e715d2bcc8..6711e64eb0b16 100644 --- a/drivers/firmware/efi/riscv-runtime.c +++ b/drivers/firmware/efi/riscv-runtime.c @@ -85,7 +85,7 @@ static int __init riscv_enable_runtime_services(void) efi_memory_desc_t *md; for_each_efi_memory_desc(md) { - int md_size = md->num_pages << EFI_PAGE_SHIFT; + u64 md_size = md->num_pages << EFI_PAGE_SHIFT; struct resource *res; if (!(md->attribute & EFI_MEMORY_SP)) -- 2.43.0