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Bug 142971 - kernel denial of service vulnerability and exploit
kernel denial of service vulnerability and exploit
Status: CLOSED DUPLICATE of bug 142969
Product: Red Hat Enterprise Linux 3
Classification: Red Hat
Component: kernel (Show other bugs)
i686 Linux
medium Severity high
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Assigned To: Dave Jones
Brian Brock
Depends On:
  Show dependency treegraph
Reported: 2004-12-15 10:21 EST by Wim Vereecken
Modified: 2015-01-04 17:14 EST (History)
4 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2004-12-15 11:20:07 EST
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
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Description Wim Vereecken 2004-12-15 10:21:14 EST
From Bugzilla Helper:
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; X11; Linux i686) Opera 
7.23  [en]

Description of problem:
Crash binary (44 bytes) for the Linux kernel 2.4.21-20.EL and 
probably earlier versions, freezing the complete system, even when 
executed without root privileges.

Version-Release number of selected component (if applicable):
2.4.21-20.EL (Red Hat Enterprise Linux AS release 3 / Taroon Update 

How reproducible:

Steps to Reproduce:
1.wget http://www.esat.kuleuven.ac.be/~wvereeck/kernel/exploit
2.chmod 755 exploit
3../exploit (as non-root)
4.freeze and cook up an excuse for your sysadmins

Actual Results:  The system freezes, so nothing world-astonishing 

Expected Results:  No crash/freeze, there are other OS's for this.

Additional info:

There seems to be a problem with the e_phnum byte in the ELF header,
which crashes the linker/kernel, when it holds a zero.
Comment 1 Suzanne Hillman 2004-12-15 11:20:07 EST

*** This bug has been marked as a duplicate of 142969 ***

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