From: Jeongjun Park <aha310510@gmail.com>
To: syzbot+64ca69977b37604cd6d9@syzkaller.appspotmail.com
Cc: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com
Subject: Re: [syzbot] [input?] KASAN: stack-out-of-bounds Read in ft260_smbus_write
Date: Tue, 20 Jan 2026 14:42:18 +0900 [thread overview]
Message-ID: <20260120054218.213265-1-aha310510@gmail.com> (raw)
In-Reply-To: <696eedec.a00a0220.203946.0001.GAE@google.com>
#syz test upstream master
---
drivers/hid/hid-ft260.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/hid/hid-ft260.c b/drivers/hid/hid-ft260.c
index 333341e80b0e..acfd69ed71a0 100644
--- a/drivers/hid/hid-ft260.c
+++ b/drivers/hid/hid-ft260.c
@@ -471,7 +471,8 @@ static int ft260_smbus_write(struct ft260_device *dev, u8 addr, u8 cmd,
struct ft260_i2c_write_request_report *rep =
(struct ft260_i2c_write_request_report *)dev->write_buf;
- if (data_len >= sizeof(rep->data))
+ if (data_len >= sizeof(rep->data) ||
+ data_len >= sizeof(data))
return -EINVAL;
rep->address = addr;
--
next prev parent reply other threads:[~2026-01-20 5:42 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-20 2:52 syzbot
2026-01-20 5:42 ` Jeongjun Park [this message]
2026-01-20 6:38 ` syzbot
2026-01-20 13:30 ` Edward Adam Davis
2026-01-20 13:32 ` syzbot
2026-01-20 13:47 ` [PATCH] i2c: add sanity check for input SMBus data length Edward Adam Davis
2026-05-19 9:43 ` Wolfram Sang
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