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Subject: cipe 1.5.2 and kernel 2.4.7 Oops
From: Michele Comitini <mcm,AT,initd,DOT,net>
Date: Thu, 2 Aug 2001 21:55:45 +0200

Hello all,

Is this a serious bug or am I doing someting wrong?

Issuing the following scan attempt with nmap:

# nmap -sU cipe-host -p 15555

I get the error from the kernel reported below, it looks like ciped does
something really nasty when receiving a bad packet!

Aug  2 21:09:23 cipe-host kernel: Unable to handle kernel paging request at 
virtual address c8000000
Aug  2 21:09:23 cipe-host kernel:  printing eip:
Aug  2 21:09:23 cipe-host kernel: c887b2ba
Aug  2 21:09:23 cipe-host kernel: *pde = 00000000
Aug  2 21:09:23 cipe-host kernel: Oops: 0000
Aug  2 21:09:23 cipe-host kernel: CPU:    0
Aug  2 21:09:23 cipe-host kernel: EIP:    0010:[<c887b2ba>]
Aug  2 21:09:23 cipe-host kernel: EFLAGS: 00010286
Aug  2 21:09:23 cipe-host kernel: eax: fd210b54   ebx: c8000000   ecx: 
a0aab854   edx: fd210b5b
Aug  2 21:09:23 cipe-host kernel: esi: c887d888   edi: c5198000   ebp: 
c746be00   esp: c746bdb4
Aug  2 21:09:23 cipe-host kernel: ds: 0018   es: 0018   ss: 0018
Aug  2 21:09:23 cipe-host kernel: Process ciped-cb (pid: 1021, 
stackpage=c746b000)
Aug  2 21:09:23 cipe-host kernel: Stack: 00000000 c5210b68 c887aca8 c5210b68 
fffffff4 c5d88660 c099b4fc c5210b68 
Aug  2 21:09:23 cipe-host kernel:        c5198000 c88797df c5198000 c5210b68 
c746be00 c2a5f1e0 c5198000 c746bf54 
Aug  2 21:09:23 cipe-host kernel:        c703aa40 54e3aa40 0c01010a fffffff8 
c8879b2c c5198000 c703aa40 c2a5f1e0 
Aug  2 21:09:23 cipe-host kernel: Call Trace: [inet_recvmsg+61/84] 
[sock_recvmsg+61/188] [sys_recvfrom+164/256] [kill_something_info+213/224] 
[sys_kill+77/88] [sys_recv+30/36] [sys_socketcall+348/512] 
Aug  2 21:09:23 cipe-host kernel:        [system_call+51/64] 
Aug  2 21:09:23 cipe-host kernel: 
Aug  2 21:09:23 cipe-host kernel: Code: 32 03 25 ff 00 00 00 c1 e9 08 33 0c 
86 43 89 d0 4a 85 c0 75 

Here is my config:

ipaddr          10.1.1.1
ptpaddr         192.168.1.33
me              cipe-host:15555
peer            1.2.3.4:6543
maxerr -1
key             xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

Thank you
michele

Attachment: pgp00000.pgp
Description: "PGP signature"


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