CVE-2006-1056
Summary
| CVE | CVE-2006-1056 |
|---|---|
| State | PUBLISHED |
| Assigner | redhat |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2006-04-20 10:02:00 UTC |
| Updated | 2025-04-03 01:03:51 UTC |
| 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. |
Risk And Classification
Primary CVSS: v2.0 2.1 from [email protected]
AV:L/AC:L/Au:N/C:P/I:N/A:N
EPSS: 0.000610000 probability, percentile 0.188490000 (date 2026-04-20)
Problem Types: CWE-310 | n/a
CVSS v2.0 Breakdown
Access Vector
LocalAccess Complexity
LowAuthentication
NoneConfidentiality
PartialIntegrity
NoneAvailability
NoneAV:L/AC:L/Au:N/C:P/I:N/A:N
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Operating System | Freebsd | Freebsd | All | All | All | All |
| Operating System | Linux | Linux Kernel | 2.6.0 | All | All | All |
| Operating System | Linux | Linux Kernel | 2.6.0 | test1 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.0 | test10 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.0 | test11 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.0 | test2 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.0 | test3 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.0 | test4 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.0 | test5 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.0 | test6 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.0 | test7 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.0 | test8 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.0 | test9 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.1 | All | All | All |
| Operating System | Linux | Linux Kernel | 2.6.1 | rc1 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.1 | rc2 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.1 | rc3 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.10 | All | All | All |
| Operating System | Linux | Linux Kernel | 2.6.10 | rc1 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.10 | rc2 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.10 | rc3 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.11 | All | All | All |
| Operating System | Linux | Linux Kernel | 2.6.11 | rc1 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.11 | rc2 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.11 | rc3 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.11 | rc4 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.11 | rc5 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.11.1 | All | All | All |
| Operating System | Linux | Linux Kernel | 2.6.11.10 | All | All | All |
| Operating System | Linux | Linux Kernel | 2.6.11.11 | All | All | All |
| Operating System | Linux | Linux Kernel | 2.6.11.12 | All | All | All |
| Operating System | Linux | Linux Kernel | 2.6.11.2 | All | All | All |
| Operating System | Linux | Linux Kernel | 2.6.11.3 | All | All | All |
| Operating System | Linux | Linux Kernel | 2.6.11.4 | All | All | All |
| Operating System | Linux | Linux Kernel | 2.6.11.5 | All | All | All |
| Operating System | Linux | Linux Kernel | 2.6.11.6 | All | All | All |
| Operating System | Linux | Linux Kernel | 2.6.11.7 | All | All | All |
| Operating System | Linux | Linux Kernel | 2.6.11.8 | All | All | All |
| Operating System | Linux | Linux Kernel | 2.6.11.9 | All | All | All |
| Operating System | Linux | Linux Kernel | 2.6.12 | rc1 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.12 | rc2 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.12 | rc3 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.12 | rc4 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.12 | rc5 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.12 | rc6 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.12.1 | All | All | All |
| Operating System | Linux | Linux Kernel | 2.6.12.2 | All | All | All |
| Operating System | Linux | Linux Kernel | 2.6.12.3 | All | All | All |
| Operating System | Linux | Linux Kernel | 2.6.12.4 | All | All | All |
| Operating System | Linux | Linux Kernel | 2.6.12.5 | All | All | All |
| Operating System | Linux | Linux Kernel | 2.6.12.6 | All | All | All |
| Operating System | Linux | Linux Kernel | 2.6.13 | All | All | All |
| Operating System | Linux | Linux Kernel | 2.6.13 | rc1 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.13 | rc2 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.13 | rc3 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.13 | rc4 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.13 | rc5 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.13 | rc6 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.13 | rc7 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.13.1 | All | All | All |
| Operating System | Linux | Linux Kernel | 2.6.13.2 | All | All | All |
| Operating System | Linux | Linux Kernel | 2.6.13.3 | All | All | All |
| Operating System | Linux | Linux Kernel | 2.6.13.4 | All | All | All |
| Operating System | Linux | Linux Kernel | 2.6.14 | All | All | All |
| Operating System | Linux | Linux Kernel | 2.6.14 | rc1 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.14 | rc2 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.14 | rc3 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.14 | rc4 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.14 | rc5 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.14.1 | All | All | All |
| Operating System | Linux | Linux Kernel | 2.6.14.2 | All | All | All |
| Operating System | Linux | Linux Kernel | 2.6.14.3 | All | All | All |
| Operating System | Linux | Linux Kernel | 2.6.14.4 | All | All | All |
| Operating System | Linux | Linux Kernel | 2.6.14.5 | All | All | All |
| Operating System | Linux | Linux Kernel | 2.6.14.6 | All | All | All |
| Operating System | Linux | Linux Kernel | 2.6.14.7 | All | All | All |
| Operating System | Linux | Linux Kernel | 2.6.15 | All | All | All |
| Operating System | Linux | Linux Kernel | 2.6.15 | rc1 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.15 | rc3 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.15 | rc4 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.15 | rc5 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.15 | rc6 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.15 | rc7 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.15.1 | All | All | All |
| Operating System | Linux | Linux Kernel | 2.6.15.2 | All | All | All |
| Operating System | Linux | Linux Kernel | 2.6.15.3 | All | All | All |
| Operating System | Linux | Linux Kernel | 2.6.15.4 | All | All | All |
| Operating System | Linux | Linux Kernel | 2.6.15.5 | All | All | All |
| Operating System | Linux | Linux Kernel | 2.6.15.6 | All | All | All |
| Operating System | Linux | Linux Kernel | 2.6.15.7 | All | All | All |
| Operating System | Linux | Linux Kernel | 2.6.16 | All | All | All |
| Operating System | Linux | Linux Kernel | 2.6.16 | rc1 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.16 | rc2 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.16 | rc3 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.16 | rc4 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.16 | rc5 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.16 | rc6 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.16.1 | All | All | All |
| Operating System | Linux | Linux Kernel | 2.6.16.2 | All | All | All |
| Operating System | Linux | Linux Kernel | 2.6.16.3 | All | All | All |
| Operating System | Linux | Linux Kernel | 2.6.16.4 | All | All | All |
| Operating System | Linux | Linux Kernel | 2.6.16.5 | All | All | All |
| Operating System | Linux | Linux Kernel | 2.6.16.6 | All | All | All |
| Operating System | Linux | Linux Kernel | 2.6.16.7 | All | All | All |
| Operating System | Linux | Linux Kernel | 2.6.16_rc7 | All | All | All |
| Operating System | Linux | Linux Kernel | 2.6.2 | All | All | All |
| Operating System | Linux | Linux Kernel | 2.6.2 | rc1 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.2 | rc2 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.2 | rc3 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.3 | All | All | All |
| Operating System | Linux | Linux Kernel | 2.6.3 | rc1 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.3 | rc2 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.3 | rc3 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.3 | rc4 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.4 | All | All | All |
| Operating System | Linux | Linux Kernel | 2.6.4 | rc1 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.4 | rc2 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.4 | rc3 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.5 | All | All | All |
| Operating System | Linux | Linux Kernel | 2.6.5 | rc1 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.5 | rc2 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.5 | rc3 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.6 | All | All | All |
| Operating System | Linux | Linux Kernel | 2.6.6 | rc1 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.6 | rc2 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.6 | rc3 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.7 | All | All | All |
| Operating System | Linux | Linux Kernel | 2.6.7 | rc1 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.7 | rc2 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.7 | rc3 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.8 | All | All | All |
| Operating System | Linux | Linux Kernel | 2.6.8 | rc1 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.8 | rc2 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.8 | rc3 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.8 | rc4 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.9 | All | All | All |
| Operating System | Linux | Linux Kernel | 2.6.9 | 2.6.20 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.9 | rc1 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.9 | rc2 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.9 | rc3 | All | All |
| Operating System | Linux | Linux Kernel | 2.6.9 | rc4 | All | All |
| Operating System | Linux | Linux Kernel | 2.6_test9_cvs | All | All | All |
| Operating System | Linux | Linux Kernel | All | All | All | All |
Vendor Declared Affected Products
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| Avaya Products Linux Kernel Multiple Vulnerabilities - Advisories - Secunia | af854a3a-2127-422b-91ae-364da2661108 | secunia.com | Vendor Advisory |
| usn/usn-302-1 - Ubuntu: Linux for human beings | af854a3a-2127-422b-91ae-364da2661108 | www.ubuntu.com | |
| SecurityFocus | af854a3a-2127-422b-91ae-364da2661108 | www.securityfocus.com | |
| Webmail - OVH | af854a3a-2127-422b-91ae-364da2661108 | www.vupen.com | Vendor Advisory |
| [security-announce] SUSE-SU-2014:0446-1: important: Security update for | af854a3a-2127-422b-91ae-364da2661108 | lists.opensuse.org | |
| LWN: Fedora alert FEDORA-2006-423 (kernel) | af854a3a-2127-422b-91ae-364da2661108 | lwn.net | |
| www.osvdb.org/24807 | af854a3a-2127-422b-91ae-364da2661108 | www.osvdb.org | |
| Ubuntu update for kernel - Advisories - Secunia | af854a3a-2127-422b-91ae-364da2661108 | secunia.com | Vendor Advisory |
| Red Hat update for kernel - Advisories - Secunia | af854a3a-2127-422b-91ae-364da2661108 | secunia.com | Vendor Advisory |
| VMware ESX Server Multiple Vulnerabilities - Advisories - Secunia | af854a3a-2127-422b-91ae-364da2661108 | secunia.com | Vendor Advisory |
| SecurityFocus | af854a3a-2127-422b-91ae-364da2661108 | www.securityfocus.com | |
| Webmail : Solution de messagerie professionnelle - OVHcloud- OVH | af854a3a-2127-422b-91ae-364da2661108 | www.vupen.com | Vendor Advisory |
| Webmail - OVH | af854a3a-2127-422b-91ae-364da2661108 | www.vupen.com | Vendor Advisory |
| VMware ESX Server x87 Register Information Leak - Advisories - Secunia | af854a3a-2127-422b-91ae-364da2661108 | secunia.com | Vendor Advisory |
| VMware ESX Server 2.5.4 Upgrade Patch 1 (for 2.5.4 Systems Only) | af854a3a-2127-422b-91ae-364da2661108 | www.vmware.com | |
| 404: File not found | af854a3a-2127-422b-91ae-364da2661108 | kernel.org | |
| Debian -- Security Information -- DSA-1097-1 kernel-source-2.4.27 | af854a3a-2127-422b-91ae-364da2661108 | www.debian.org | |
| VMware ESX Server 2.1.3 Upgrade Patch 2 (for 2.1.3 Systems Only) | af854a3a-2127-422b-91ae-364da2661108 | www.vmware.com | |
| SecurityTracker.com Archives - FreeBSD Floating Point Unit Kernel Implementation Error May Let Local Users Obtain Sensitive Information | af854a3a-2127-422b-91ae-364da2661108 | securitytracker.com | |
| 'RE: Linux 2.6.16.9' - MARC | af854a3a-2127-422b-91ae-364da2661108 | marc.info | |
| Debian -- Security Information -- DSA-1103-1 kernel-source-2.6.8 | af854a3a-2127-422b-91ae-364da2661108 | www.debian.org | |
| Avaya Products Linux Kernel Multiple Vulnerabilities - Advisories - Secunia | af854a3a-2127-422b-91ae-364da2661108 | secunia.com | Vendor Advisory |
| ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-06:14.fpu.asc | af854a3a-2127-422b-91ae-364da2661108 | ftp.freebsd.org | |
| IBM X-Force Exchange | af854a3a-2127-422b-91ae-364da2661108 | exchange.xforce.ibmcloud.com | |
| rhn.redhat.com | Red Hat Support | af854a3a-2127-422b-91ae-364da2661108 | www.redhat.com | |
| Red Hat update for kernel - Advisories - Secunia | af854a3a-2127-422b-91ae-364da2661108 | secunia.com | Vendor Advisory |
| Security Announcement | af854a3a-2127-422b-91ae-364da2661108 | www.novell.com | |
| SecurityFocus | af854a3a-2127-422b-91ae-364da2661108 | www.securityfocus.com | |
| VMware KB: ESX Server 3.0.0 Patch ESX-2533126: AMD fxsave/fxrstor Security Vulnerability | af854a3a-2127-422b-91ae-364da2661108 | kb.vmware.com | |
| SUSE update for kernel - Advisories - Secunia | af854a3a-2127-422b-91ae-364da2661108 | secunia.com | Vendor Advisory |
| Linux Kernel x87 Register Information Leak - Advisories - Secunia | af854a3a-2127-422b-91ae-364da2661108 | secunia.com | Patch, Vendor Advisory |
| Repository / Oval Repository | af854a3a-2127-422b-91ae-364da2661108 | oval.cisecurity.org | |
| ASA-2006-200 (RHSA-2006-0575) | af854a3a-2127-422b-91ae-364da2661108 | support.avaya.com | |
| ASA-2006-180 (RHSA-2006-0437) | af854a3a-2127-422b-91ae-364da2661108 | support.avaya.com | |
| Fedora update for kernel - Advisories - Secunia | af854a3a-2127-422b-91ae-364da2661108 | secunia.com | Vendor Advisory |
| Webmail : Solution de messagerie professionnelle - OVHcloud- OVH | af854a3a-2127-422b-91ae-364da2661108 | www.vupen.com | Vendor Advisory |
| Red Hat update for kernel - Advisories - Secunia | af854a3a-2127-422b-91ae-364da2661108 | secunia.com | Vendor Advisory |
| security.freebsd.org/advisories/FreeBSD-SA-06:14-amd.txt | af854a3a-2127-422b-91ae-364da2661108 | security.freebsd.org | |
| Debian update for kernel-source-2.4.27 - Advisories - Secunia | af854a3a-2127-422b-91ae-364da2661108 | secunia.com | Vendor Advisory |
| FreeBSD FPU x87 Register Information Leak - Advisories - Secunia | af854a3a-2127-422b-91ae-364da2661108 | secunia.com | Patch, Vendor Advisory |
| SecurityFocus | af854a3a-2127-422b-91ae-364da2661108 | www.securityfocus.com | |
| Multiple Vendor AMD CPU Local FPU Information Disclosure Vulnerability | af854a3a-2127-422b-91ae-364da2661108 | www.securityfocus.com | Patch |
| rhn.redhat.com | Red Hat Support | af854a3a-2127-422b-91ae-364da2661108 | www.redhat.com | |
| www.osvdb.org/24746 | af854a3a-2127-422b-91ae-364da2661108 | www.osvdb.org | |
| Debian update for kernel-source-2.6.8 - Advisories - Secunia | af854a3a-2127-422b-91ae-364da2661108 | secunia.com | Vendor Advisory |
| 187911 – CVE-2006-1056 FPU Information leak on i386/x86-64 on AMD CPUs | af854a3a-2127-422b-91ae-364da2661108 | bugzilla.redhat.com | |
| 187910 – CVE-2006-1056 FPU Information leak on i386/x86-64 on AMD CPUs | af854a3a-2127-422b-91ae-364da2661108 | bugzilla.redhat.com | |
| SecurityFocus | af854a3a-2127-422b-91ae-364da2661108 | www.securityfocus.com | |
| Webmail : Solution de messagerie professionnelle - OVHcloud- OVH | af854a3a-2127-422b-91ae-364da2661108 | www.vupen.com | Vendor Advisory |
| rhn.redhat.com | Red Hat Support | af854a3a-2127-422b-91ae-364da2661108 | www.redhat.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
Legacy QID Mappings
- 690304 Free Berkeley Software Distribution (FreeBSD) Security Update for FreeBSD (1fa4c9f1-cfca-11da-a672-000e0c2e438a)