i386/68058: Latest Linux 2.4/2.6 kernel crash also crashes some FreeBSD 5.2 systems

[Florian Klemenz]

>Number:         68058
>Category:       i386
>Synopsis:       Latest Linux 2.4/2.6 kernel crash also crashes some FreeBSD 5.2 systems
>Confidential:   no
>Severity:       critical
>Priority:       medium
>Responsible:    freebsd-i386
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Thu Jun 17 19:30:18 GMT 2004
>Closed-Date:
>Last-Modified:
>Originator:     Florian Klemenz
>Release:        5.2.1-RELEASE-p8
>Organization:
>Environment:
FreeBSD archvile.fok.local 5.2.1-RELEASE-p8-fok2 FreeBSD 5.2.1-RELEASE-p8-fok2 #1: Thu May 27 00:38:29 CEST 2004     fok at archvile.fok.local:/usr/obj/usr/src/sys/ARCHVILE  i386

CPU: Pentium II/Pentium II Xeon/Celeron (525.00-MHz 686-class CPU)
  Origin = "GenuineIntel"  Id = 0x665  Stepping = 5
  Features=0x183f9ff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR>

> gcc -v
Using built-in specs.
Configured with: FreeBSD/i386 system compiler
Thread model: posix
gcc version 3.3.3 [FreeBSD] 20031106

>Description:
The latest Linux 2.4/2.6 bug as described on http://linuxreviews.org/news/2004-06-11_kernel_crash/ also effects some FreeBSD 5.2 systems. The exploit lets FreeBSD reboot spontaneously.

This has been confirmed from three people in #freebsd.de on Quakenet. Affected are at least boxes running 5.2.1-RELEASE-px and 5.2-CURRENT (approx. 1 week old).
However not all systems running these versions seem to be affected.
>How-To-Repeat:
As user or root:
Compile http://linuxreviews.org/news/2004-06-11_kernel_crash/crash.c.txt or http://linuxreviews.org/news/2004-06-11_kernel_crash/krnl-1.c.txt with gcc and execute the resulting binary.
>Fix:
      
>Release-Note:
>Audit-Trail:
>Unformatted: