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From: "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
To: "Masami Hiramatsu" <mhiramat@kernel.org>,
	"Andrew Morton" <akpm@linux-foundation.org>,
	"Breno Leitao" <leitao@debian.org>,
	"Christian Brauner" <brauner@kernel.org>,
	"Thomas Gleixner" <tglx@kernel.org>,
	"Ryan Roberts" <ryan.roberts@arm.com>,
	"Thomas Weißschuh" <thomas.weissschuh@linutronix.de>,
	"Douglas Anderson" <dianders@chromium.org>,
	"Huacai Chen" <chenhuacai@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>,
	linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org,
	Sang-Heon Jeon <ekffu200098@gmail.com>
Subject: [PATCH v4 0/2] bootconfig: Fix integer overflow problems
Date: Fri, 11 Sep 2026 00:15:13 +0900	[thread overview]
Message-ID: <178905331374.213925.295025394754459843.stgit@devnote2> (raw)

Hi,

Here are v4 patches to fix bootconfig size overflow issue. If there is a wrong
bootconfig size is recorded, it can bypass the size check in the tool and the
kernel.

Here is the previous version.

  https://lore.kernel.org/all/178900555453.200943.4719889510443114485.stgit@devnote2/

This version removes redundant and wrong size check in setup_boot_config()
and add correct error message for size > XBC_DATA_MAX.

Thank you,

---

Masami Hiramatsu (Google) (2):
      tools/bootconfig: Fix integer overflow and truncation in size checks
      bootconfig: Fix integer overflow in initrd size check


 init/main.c             |   25 +++++++++++++++----------
 tools/bootconfig/main.c |   13 ++++++++++++-
 2 files changed, 27 insertions(+), 11 deletions(-)

--
Masami Hiramatsu (Google) <mhiramat@kernel.org>

             reply	other threads:[~2026-09-10 15:15 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-09-10 15:15 Masami Hiramatsu (Google) [this message]
2026-09-10 15:15 ` [PATCH v4 1/2] tools/bootconfig: Fix integer overflow and truncation in size checks Masami Hiramatsu (Google)
2026-09-10 16:16   ` Sang-Heon Jeon
2026-09-10 15:15 ` [PATCH v4 2/2] bootconfig: Fix integer overflow in initrd size check Masami Hiramatsu (Google)
2026-09-10 16:29   ` Sang-Heon Jeon
2026-09-11  6:16     ` Masami Hiramatsu

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