linux-kernel - [PATCH v1 4/5] gpu: nova-core: use checked arithmetic in BinFirmware::data

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20260124231830.3088323-5-joelagnelf@nvidia.com>
Date: Sat, 24 Jan 2026 18:18:29 -0500
From: Joel Fernandes <joelagnelf@...dia.com>
To: linux-kernel@...r.kernel.org,
	Danilo Krummrich <dakr@...nel.org>,
	Alexandre Courbot <acourbot@...dia.com>,
	Alice Ryhl <aliceryhl@...gle.com>,
	David Airlie <airlied@...il.com>,
	Simona Vetter <simona@...ll.ch>
Cc: John Hubbard <jhubbard@...dia.com>,
	Alistair Popple <apopple@...dia.com>,
	Timur Tabi <ttabi@...dia.com>,
	Edwin Peer <epeer@...dia.com>,
	Zhi Wang <zhiw@...dia.com>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Miguel Ojeda <ojeda@...nel.org>,
	Alex Gaynor <alex.gaynor@...il.com>,
	Boqun Feng <boqun.feng@...il.com>,
	Gary Guo <gary@...yguo.net>,
	Björn Roy Baron <bjorn3_gh@...tonmail.com>,
	Benno Lossin <lossin@...nel.org>,
	Andreas Hindborg <a.hindborg@...nel.org>,
	Trevor Gross <tmgross@...ch.edu>,
	nouveau@...ts.freedesktop.org,
	dri-devel@...ts.freedesktop.org,
	rust-for-linux@...r.kernel.org,
	Joel Fernandes <joelagnelf@...dia.com>
Subject: [PATCH v1 4/5] gpu: nova-core: use checked arithmetic in BinFirmware::data

Use checked_add() when computing the firmware data end offset in the
BinFirmware::data() method. The data_offset and data_size fields come
from the BinHdr structure parsed from the firmware file header.

Signed-off-by: Joel Fernandes <joelagnelf@...dia.com>
---
 drivers/gpu/nova-core/firmware.rs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/nova-core/firmware.rs b/drivers/gpu/nova-core/firmware.rs
index 68779540aa28..4f57a270e142 100644
--- a/drivers/gpu/nova-core/firmware.rs
+++ b/drivers/gpu/nova-core/firmware.rs
@@ -394,8 +394,9 @@ fn new(fw: &'a firmware::Firmware) -> Result<Self> {
     fn data(&self) -> Option<&[u8]> {
         let fw_start = usize::from_safe_cast(self.hdr.data_offset);
         let fw_size = usize::from_safe_cast(self.hdr.data_size);
+        let fw_end = fw_start.checked_add(fw_size)?;
 
-        self.fw.get(fw_start..fw_start + fw_size)
+        self.fw.get(fw_start..fw_end)
     }
 }
 
-- 
2.34.1