Bug#658278: ld.so segfaults on wrong input

[Goswin von Brederlow <goswin-v-b@web.de>]

reopen 658278
thanks

Aurelien Jarno <aurelien@aurel32.net> writes:

> On Wed, Feb 01, 2012 at 07:47:29PM +0100, Goswin von Brederlow wrote:
>> Package: libc6
>> Version: 2.13-21
>> Severity: normal
>> File: /lib64/ld-linux-x86-64.so.2
>> 
>> Running ld.so with the wrong kind of file segfaults:
>> 
>> mrvn@frosties:~% /lib64/ld-linux-x86-64.so.2 /usr/lib/klibc/bin/ls 
>> zsh: segmentation fault  /lib64/ld-linux-x86-64.so.2 /usr/lib/klibc/bin/ls
>> 
>
> It's not the wrong file type:
>
> $file /usr/lib/klibc/bin/ls
> /usr/lib/klibc/bin/ls: ELF 64-bit LSB executable, x86-64, version 1
> (SYSV), statically linked (uses shared libs), stripped
>
> It's an ELF file, but given it has a different ABI just doesn't work
> with /lib64/ld-linux-x86-64.so.2. It's hardly the fault of the libc.

It has a different interpreter in its elf section. Ld.so could check
that to determine wether the elf file is one it should care about.

A segfault is never correct behaviour and needs to be fixed in ld.so.

MfG
        Goswin