Description

The get_random_int function in drivers/char/random.c in the Linux kernel before 2.6.30 produces insufficiently random numbers, which allows attackers to predict the return value, and possibly defeat protection mechanisms based on randomization, via vectors that leverage the function's tendency to "return the same value over and over again for long stretches of time."

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=8a0a9bd4db63bc45e3017bedeafbd88d0eb84d02

http://lists.opensuse.org/opensuse-security-announce/2009-11/msg00005.html

http://lists.opensuse.org/opensuse-security-announce/2010-02/msg00005.html

http://patchwork.kernel.org/patch/21766/

http://secunia.com/advisories/37105

http://secunia.com/advisories/37351

http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.30

http://www.redhat.com/support/errata/RHSA-2009-1438.html

http://www.ubuntu.com/usn/USN-852-1

https://bugzilla.redhat.com/show_bug.cgi?id=499785

https://bugzilla.redhat.com/show_bug.cgi?id=519692

https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11168

https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03836en_us

Details

Risk Information

CVSS v2