From: syzbot <syzbot+d99f3a288cc7d8ef60fb@syzkaller.appspotmail.com>
To: linux-kernel@vger.kernel.org
Subject: Forwarded: Re: [syzbot] [media?] general protection fault in su3000_i2c_transfer
Date: Thu, 21 Aug 2025 18:41:36 -0700 [thread overview]
Message-ID: <68a7cad0.050a0220.37038e.0048.GAE@google.com> (raw)
In-Reply-To: <68a7b69f.050a0220.37038e.0047.GAE@google.com>
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linux-kernel@vger.kernel.org.
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Subject: Re: [syzbot] [media?] general protection fault in su3000_i2c_transfer
Author: lizhi.xu@windriver.com
#syz test
diff --git a/drivers/i2c/i2c-dev.c b/drivers/i2c/i2c-dev.c
index e9577f920286..17b0bec53e21 100644
--- a/drivers/i2c/i2c-dev.c
+++ b/drivers/i2c/i2c-dev.c
@@ -257,7 +257,7 @@ static noinline int i2cdev_ioctl_rdwr(struct i2c_client *client,
res = 0;
for (i = 0; i < nmsgs; i++) {
/* Limit the size of the message to a sane amount */
- if (msgs[i].len > 8192) {
+ if (msgs[i].len > 8192 || msgs[i].len == 0) {
res = -EINVAL;
break;
}
next prev parent reply other threads:[~2025-08-22 1:41 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-08-22 0:15 syzbot
2025-08-22 1:41 ` syzbot [this message]
2025-08-22 2:09 ` [PATCH] i2c: dev: Block zero-length messages Lizhi Xu
2025-12-08 2:25 ` Forwarded: [PATCH] media: dw2102: validate I2C messages in su3000_i2c_transfer() syzbot
2025-12-08 2:33 ` syzbot
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