[plug] Linux

[Steve Grasso]

Buffer overflow in sendmail?

On Monday 26 November 2001 16:20, Andrew Barbara wrote:
> Hi
> On of our servers crashed with the following output.  What does this mean =
> and how can we stop it from happening again?
>
> Nov  5 07:43:00 gateway kernel: Unable to handle kernel paging request at =
> virtual address eb851ed0
> Nov  5 07:43:00 gateway kernel:  printing eip:
> Nov  5 07:43:00 gateway kernel: c010dce1
> Nov  5 07:43:00 gateway kernel: pgd entry c7023eb8: 0000000000000000
> Nov  5 07:43:00 gateway kernel: pmd entry c7023eb8: 0000000000000000
> Nov  5 07:43:00 gateway kernel: ... pmd not present!
> Nov  5 07:43:00 gateway kernel: Oops: 0000
> Nov  5 07:43:00 gateway kernel: CPU:    0
> Nov  5 07:43:00 gateway kernel: EIP:    0010:[restore_fpu+1/32]
> Nov  5 07:43:00 gateway kernel: EIP:    0010:[<c010dce1>]
> Nov  5 07:43:00 gateway kernel: EFLAGS: 00010206
> Nov  5 07:43:00 gateway kernel: eax: c3786000   ebx: c3786000   ecx: =
> bfffe0b0   edx: 00000018
> Nov  5 07:43:00 gateway kernel: esi: eb851eb8   edi: 3f9eb851   ebp: =
> bfffde98   esp: c3787fb8
> Nov  5 07:43:00 gateway kernel: ds: 0018   es: 0018   ss: 0018
> Nov  5 07:43:00 gateway kernel: Process sendmail (pid: 6746,
> stackpage=3Dc3= 787000)
> Nov  5 07:43:00 gateway kernel: Stack: c010a029 c3786000 c01090b4 4025e9e4
> = bfffe0b0 000eb851 eb851eb8 3f9eb851=20
> Nov  5 07:43:00 gateway kernel:        bfffde98 3f900000 0000002b 0000002b
> = ffffffff 40188db5 00000023 00010202=20
> Nov  5 07:43:00 gateway kernel:        bfffde88 0000002b=20
> Nov  5 07:43:00 gateway kernel: Call Trace: [math_state_restore+25/64] =
> [ret_from_exception+0/16] [<eb851eb8>]=20
> Nov  5 07:43:00 gateway kernel: Call Trace: [<c010a029>] [<c01090b4>] =
> [<eb851eb8>]=20
> Nov  5 07:43:00 gateway kernel:=20
> Nov  5 07:43:00 gateway kernel: Code: 3a 34 32 3a 30 31 20 a1 6c 6b 25 c0 =
> 8b 54 24 04 a9 00 00 00=20
> Thanks.
>
> Andrew Barbara,  MCP
> MMT Networks Pty Ltd
> http://www.mmtnetworks.com.au