From: syzbot <syzbot+0b7937459742a0a4cffd@syzkaller.appspotmail.com>
To: linux-kernel@vger.kernel.org
Subject: Re: [syzbot] [udf?] KASAN: slab-use-after-free Read in udf_free_blocks
Date: Sat, 25 Nov 2023 05:10:38 -0800 [thread overview]
Message-ID: <000000000000922bec060af9cbc2@google.com> (raw)
In-Reply-To: <000000000000d40c3c05fdc05cd1@google.com>
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Subject: [udf?] KASAN: slab-use-after-free Read in udf_free_blocks
Author: eadavis@qq.com
please test uaf in udf_free_blocks
#syz test https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git 123212f53f3e
diff --git a/fs/open.c b/fs/open.c
index 02dc608d40d8..bc2d1db2fcba 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -1441,11 +1441,11 @@ static long do_sys_openat2(int dfd, const char __user *filename,
if (IS_ERR(f)) {
put_unused_fd(fd);
fd = PTR_ERR(f);
+ putname(tmp);
} else {
fd_install(fd, f);
}
}
- putname(tmp);
return fd;
}
next prev parent reply other threads:[~2023-11-25 13:10 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-06-10 6:11 [syzbot] [udf?] KASAN: slab-use-after-free Read in udf_free_blocks syzbot
2023-11-25 11:54 ` syzbot
2023-11-25 13:10 ` syzbot [this message]
2024-03-02 15:19 ` syzbot
2024-03-11 9:25 ` Jan Kara
[not found] <tencent_F60445D778976B46CD3364E3732976A3AE05@qq.com>
2023-11-25 13:39 ` syzbot
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