From: syzbot <syzbot+b2cfdac9ae5278d4b621@syzkaller.appspotmail.com>
To: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com
Subject: Re: [syzbot] Re: [syzbot] [squashfs?] VFS: Close: file count is zero (use-after-free)
Date: Sun, 02 Jun 2024 23:19:46 -0700 [thread overview]
Message-ID: <000000000000e39ee90619f65123@google.com> (raw)
In-Reply-To: <000000000000a82e6e0619e9c192@google.com>
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***
Subject: Re: [syzbot] [squashfs?] VFS: Close: file count is zero (use-after-free)
Author: nightu.pwn@gmail.com
please test file uaf in udmabuf_create
#syz test
---
drivers/dma-buf/udmabuf.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/dma-buf/udmabuf.c b/drivers/dma-buf/udmabuf.c
index afa8bfd2a2a9..53035c601e92 100644
--- a/drivers/dma-buf/udmabuf.c
+++ b/drivers/dma-buf/udmabuf.c
@@ -382,6 +382,7 @@ static long udmabuf_create(struct miscdevice *device,
kfree(folios);
fput(memfd);
+ memfd = NULL;
}
flags = head->flags & UDMABUF_FLAGS_CLOEXEC ? O_CLOEXEC : 0;
--
next prev parent reply other threads:[~2024-06-03 6:19 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-06-02 15:20 [syzbot] [squashfs?] VFS: Close: file count is zero (use-after-free) syzbot
2024-06-03 5:42 ` [syzbot] Fix use-after-free in udmabuf_create syzbot
2024-06-03 5:51 ` [syzbot] Re: [syzbot] [squashfs?] VFS: Close: file count is zero (use-after-free) syzbot
2024-06-03 6:19 ` syzbot [this message]
2024-06-13 6:23 ` Kasireddy, Vivek
2024-06-13 7:10 ` syzbot
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