CVE-2006-1056

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.

• CWE-310

• 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://lwn.net/Alerts/180820/
• http://marc.info/?l=linux-kernel&m=114548768214478&w=2
• http://secunia.com/advisories/19715Patch, Vendor Advisory
• http://secunia.com/advisories/19724Patch, Vendor Advisory
• http://secunia.com/advisories/19735Vendor Advisory
• http://secunia.com/advisories/20398Vendor Advisory
• http://secunia.com/advisories/20671Vendor Advisory
• http://secunia.com/advisories/20716Vendor Advisory
• http://secunia.com/advisories/20914Vendor Advisory
• http://secunia.com/advisories/21035Vendor Advisory
• http://secunia.com/advisories/21136Vendor Advisory
• http://secunia.com/advisories/21465Vendor Advisory
• http://secunia.com/advisories/21983Vendor Advisory
• http://secunia.com/advisories/22417Vendor Advisory
• http://secunia.com/advisories/22875Vendor Advisory
• http://secunia.com/advisories/22876Vendor Advisory
• http://security.freebsd.org/advisories/FreeBSD-SA-06:14-amd.txt
• http://securitytracker.com/id?1015966
• 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.osvdb.org/24746
• http://www.osvdb.org/24807
• 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.securityfocus.com/archive/1/431341
• http://www.securityfocus.com/archive/1/451404/100/0/threaded
• http://www.securityfocus.com/archive/1/451417/100/200/threaded
• http://www.securityfocus.com/archive/1/451419/100/200/threaded
• http://www.securityfocus.com/archive/1/451421/100/0/threaded
• http://www.securityfocus.com/bid/17600Patch
• 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/2006/1426Vendor Advisory
• http://www.vupen.com/english/advisories/2006/1475Vendor Advisory
• http://www.vupen.com/english/advisories/2006/2554Vendor Advisory
• http://www.vupen.com/english/advisories/2006/4353Vendor Advisory
• http://www.vupen.com/english/advisories/2006/4502Vendor Advisory
• https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=187910
• https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=187911
• https://exchange.xforce.ibmcloud.com/vulnerabilities/25871
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9995
• 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://lwn.net/Alerts/180820/
• http://marc.info/?l=linux-kernel&m=114548768214478&w=2
• http://secunia.com/advisories/19715Patch, Vendor Advisory
• http://secunia.com/advisories/19724Patch, Vendor Advisory
• http://secunia.com/advisories/19735Vendor Advisory
• http://secunia.com/advisories/20398Vendor Advisory
• http://secunia.com/advisories/20671Vendor Advisory
• http://secunia.com/advisories/20716Vendor Advisory
• http://secunia.com/advisories/20914Vendor Advisory
• http://secunia.com/advisories/21035Vendor Advisory
• http://secunia.com/advisories/21136Vendor Advisory
• http://secunia.com/advisories/21465Vendor Advisory
• http://secunia.com/advisories/21983Vendor Advisory
• http://secunia.com/advisories/22417Vendor Advisory
• http://secunia.com/advisories/22875Vendor Advisory
• http://secunia.com/advisories/22876Vendor Advisory
• http://security.freebsd.org/advisories/FreeBSD-SA-06:14-amd.txt
• http://securitytracker.com/id?1015966
• 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.osvdb.org/24746
• http://www.osvdb.org/24807
• 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.securityfocus.com/archive/1/431341
• http://www.securityfocus.com/archive/1/451404/100/0/threaded
• http://www.securityfocus.com/archive/1/451417/100/200/threaded
• http://www.securityfocus.com/archive/1/451419/100/200/threaded
• http://www.securityfocus.com/archive/1/451421/100/0/threaded
• http://www.securityfocus.com/bid/17600Patch
• 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/2006/1426Vendor Advisory
• http://www.vupen.com/english/advisories/2006/1475Vendor Advisory
• http://www.vupen.com/english/advisories/2006/2554Vendor Advisory
• http://www.vupen.com/english/advisories/2006/4353Vendor Advisory
• http://www.vupen.com/english/advisories/2006/4502Vendor Advisory
• https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=187910
• https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=187911
• https://exchange.xforce.ibmcloud.com/vulnerabilities/25871
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9995

Published

Apr 20, 2006

Last Modified

Jun 16, 2026

Status

Modified