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.

Category

2.1
CVSS
Severity: Low
CVSS 2.0 •
EPSS 0.08%
Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory lwn.net Vendor Advisory ubuntu.com Vendor Advisory debian.org Vendor Advisory redhat.com Vendor Advisory novell.com Vendor Advisory debian.org Vendor Advisory freebsd.org Vendor Advisory opensuse.org Vendor Advisory secunia.com Vendor Advisory secunia.com Vendor Advisory secunia.com Vendor Advisory secunia.com Vendor Advisory secunia.com Vendor Advisory secunia.com Vendor Advisory secunia.com Vendor Advisory secunia.com Vendor Advisory secunia.com Vendor Advisory secunia.com Vendor Advisory secunia.com Vendor Advisory secunia.com Vendor Advisory secunia.com Vendor Advisory secunia.com Vendor Advisory vupen.com Vendor Advisory vupen.com Vendor Advisory vupen.com Vendor Advisory vupen.com Vendor Advisory vupen.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9995 vdb entry signature
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=187911
http://www.redhat.com/support/errata/RHSA-2006-0437.html vendor advisory
http://secunia.com/advisories/22876 third party advisory vendor advisory
http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.16.9
http://secunia.com/advisories/19735 third party advisory vendor advisory
http://www.vupen.com/english/advisories/2006/4502 vdb entry vendor advisory
http://www.vupen.com/english/advisories/2006/2554 vdb entry vendor advisory
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=187910
http://www.redhat.com/support/errata/RHSA-2006-0579.html vendor advisory
http://secunia.com/advisories/20716 third party advisory vendor advisory
http://secunia.com/advisories/22875 third party advisory vendor advisory
http://lwn.net/Alerts/180820/ vendor advisory
http://secunia.com/advisories/21136 third party advisory vendor advisory
http://www.ubuntu.com/usn/usn-302-1 vendor advisory
http://kb.vmware.com/kb/2533126
http://www.osvdb.org/24746 vdb entry
http://www.osvdb.org/24807 vdb entry
http://secunia.com/advisories/21983 third party advisory vendor advisory
http://www.vupen.com/english/advisories/2006/4353 vdb entry vendor advisory
http://secunia.com/advisories/21035 third party advisory vendor advisory
http://www.vmware.com/download/esx/esx-213-200610-patch.html
http://www.debian.org/security/2006/dsa-1097 vendor advisory
http://www.redhat.com/support/errata/RHSA-2006-0575.html vendor advisory
http://www.novell.com/linux/security/advisories/2006-05-31.html vendor advisory
http://www.securityfocus.com/archive/1/451421/100/0/threaded mailing list
http://www.vupen.com/english/advisories/2006/1426 vdb entry vendor advisory
http://secunia.com/advisories/19715 third party advisory patch vendor advisory
http://securitytracker.com/id?1015966 vdb entry
http://www.securityfocus.com/archive/1/431341 mailing list
http://www.securityfocus.com/bid/17600 vdb entry patch
http://support.avaya.com/elmodocs2/security/ASA-2006-180.htm
http://www.debian.org/security/2006/dsa-1103 vendor advisory
http://www.vmware.com/download/esx/esx-254-200610-patch.html
ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-06:14.fpu.asc vendor advisory
http://secunia.com/advisories/21465 third party advisory vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00021.html vendor advisory
http://marc.info/?l=linux-kernel&m=114548768214478&w=2 mailing list
http://www.vupen.com/english/advisories/2006/1475 vdb entry vendor advisory
http://www.securityfocus.com/archive/1/451404/100/0/threaded mailing list
https://exchange.xforce.ibmcloud.com/vulnerabilities/25871 vdb entry
http://support.avaya.com/elmodocs2/security/ASA-2006-200.htm
http://secunia.com/advisories/20398 third party advisory vendor advisory
http://www.securityfocus.com/archive/1/451417/100/200/threaded mailing list
http://security.freebsd.org/advisories/FreeBSD-SA-06:14-amd.txt
http://secunia.com/advisories/22417 third party advisory vendor advisory
http://secunia.com/advisories/19724 third party advisory patch vendor advisory
http://secunia.com/advisories/20671 third party advisory vendor advisory
http://www.securityfocus.com/archive/1/451419/100/200/threaded mailing list
http://secunia.com/advisories/20914 third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2006-1056?
CVE-2006-1056 has been scored as a low severity vulnerability.
How to fix CVE-2006-1056?
To fix CVE-2006-1056, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2006-1056 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2006-1056 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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