CVE-2006-1056

Description

The Linux kernel before 2.6.16.9 and the FreeBSD kernel, when running on AMD64 and other 7th and 8th generation AuthenticAMD processors, only save/restore the FOP, FIP, and FDP x87 registers in FXSAVE/FXRSTOR when an exception is pending, which allows one process to determine portions of the state of floating point instructions of other processes, which can be leveraged to obtain sensitive information such as cryptographic keys. NOTE: this is the documented behavior of AMD64 processors, but it is inconsistent with Intel processors in a security-relevant fashion that was not addressed by the kernels.

References

ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-06:14.fpu.asc

http://kb.vmware.com/kb/2533126

http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.16.9

http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00021.html

http://marc.info/?l=linux-kernel&m=114548768214478&w=2

https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=187910

https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=187911

http://secunia.com/advisories/19715

http://secunia.com/advisories/19724

http://secunia.com/advisories/19735

http://secunia.com/advisories/20398

http://secunia.com/advisories/20671

http://secunia.com/advisories/20716

http://secunia.com/advisories/20914

http://secunia.com/advisories/21035

http://secunia.com/advisories/21136

http://secunia.com/advisories/21465

http://secunia.com/advisories/21983

http://secunia.com/advisories/22417

http://secunia.com/advisories/22875

http://secunia.com/advisories/22876

http://security.freebsd.org/advisories/FreeBSD-SA-06:14-amd.txt

http://securitytracker.com/id?1015966

https://exchange.xforce.ibmcloud.com/vulnerabilities/25871

https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9995

http://support.avaya.com/elmodocs2/security/ASA-2006-180.htm

http://support.avaya.com/elmodocs2/security/ASA-2006-200.htm

http://www.debian.org/security/2006/dsa-1097

http://www.debian.org/security/2006/dsa-1103

http://www.novell.com/linux/security/advisories/2006-05-31.html

http://www.redhat.com/support/errata/RHSA-2006-0437.html

http://www.redhat.com/support/errata/RHSA-2006-0575.html

http://www.redhat.com/support/errata/RHSA-2006-0579.html

http://www.ubuntu.com/usn/usn-302-1

http://www.vmware.com/download/esx/esx-213-200610-patch.html

http://www.vmware.com/download/esx/esx-254-200610-patch.html

http://www.vupen.com/english/advisories/2006/1426

http://www.vupen.com/english/advisories/2006/1475

http://www.vupen.com/english/advisories/2006/2554

http://www.vupen.com/english/advisories/2006/4353

http://www.vupen.com/english/advisories/2006/4502

Details

Source: Mitre, NVD

Risk Information

CVSS v2