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

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2006-1050Kwik-Pay Payroll 4.2.20, and possibly other versions, stores…
• CVE-2006-1051SQL injection vulnerability in Akarru Social BookMarking Eng…
• CVE-2006-1052The selinux_ptrace logic in hooks.c in SELinux for Linux 2.6…
• CVE-2006-1053Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. ConsultID…
• CVE-2006-1054Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. ConsultI…
• CVE-2006-1055The fill_write_buffer function in sysfs/file.c in Linux kern…
• CVE-2006-1057Race condition in daemon/slave.c in gdm before 2.14.1 allows…
• CVE-2006-1058BusyBox 1.1.1 does not use a salt when generating passwords,…5.5
• CVE-2006-1059The winbindd daemon in Samba 3.0.21 to 3.0.21c writes the ma…
• CVE-2006-1060Heap-based buffer overflow in zgv before 5.8 and xzgv before…
• CVE-2006-1061Heap-based buffer overflow in cURL and libcURL 7.15.0 throug…
• CVE-2006-1062Unspecified vulnerability in lurker.cgi for Lurker 2.0 and e…