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Category:   OS (Linux)  >   Linux Kernel Vendors:   kernel.org
Linux Kernel Random Number Generator May Not Generate Random Numbers in Certain Situations
SecurityTracker Alert ID:  1018248
SecurityTracker URL:  http://securitytracker.com/id/1018248
CVE Reference:   CVE-2007-2453   (Links to External Site)
Date:  Jun 14 2007
Impact:   Modification of system information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 2.6 prior to 2.6.20.13; also 2.6.21.x before 2.6.21.4
Description:   A vulnerability was reported in Linux Kernel. A random number generator may not produce random numbers on systems without entropy.

On systems without entropy sources, the random number feature does not properly seed pools. The random number generator may provide non-random values in certain cases.

Impact:   A random number generator may not produce random numbers on systems without entropy.
Solution:   The vendor has issued a fixed version (2.6.21.4).

The Linux advisory is available at:

http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.21.4

Vendor URL:  www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.21.4 (Links to External Site)
Cause:   Randomization error, State error

Message History:   This archive entry has one or more follow-up message(s) listed below.
Jun 14 2007 (Red Hat Issues Fix) Linux Kernel Random Number Generator May Not Generate Random Numbers in Certain Situations
Red Hat has released a fix for Red Hat Enterprise Linux 5.



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