oss-sec mailing list archives

Re: CVE request: kernel: fcaps: clear the same personality flags as suid when fcaps are used


From: Kurt Seifried <kseifried () redhat com>
Date: Thu, 19 Apr 2012 22:56:47 -0600

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On 04/19/2012 10:52 PM, Eugene Teo wrote:
Reported by Steve Grubb, if a process increases permissions using
fcaps all of the dangerous personality flags which are cleared for
suid apps should also be cleared. Thus programs given priviledge
with fcaps will continue to have address space randomization
enabled even if the parent tried to disable it to make it easier to
attack.

Upstream commit: 
http://git.kernel.org/linus/d52fc5dde171f030170a6cb78034d166b13c9445

 Reference: https://bugzilla.redhat.com/show_bug.cgi?id=806722

Thanks, Eugene

Please use CVE-2012-2123 for this issue.

- -- 
Kurt Seifried Red Hat Security Response Team (SRT)
PGP: 0x5E267993 A90B F995 7350 148F 66BF 7554 160D 4553 5E26 7993

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