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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,…
- 2.1LowCVSS base score
- 0.46%Exploitation in 30 daysEPSS · top 60% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By redhat
- 44 days later
· 44 days later
Published
- 18 years later
· 18 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Low2.1 | AV:L/AC:L/Au:N/C:P/I:N/A:N |
- EPSS (exploitation in 30 days)
- 0.46% · top 60% of all CVEs (11 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Low 2.1.
Affected products
n/a
- affected n/a
References
References49
- oval:org.mitre.oval:def:9995 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
- https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=187911 (opens in a new tab)x_refsource_CONFIRMx_transferred
- RHSA-2006:0437 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- 22876 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.16.9 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 19735 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- ADV-2006-4502 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- ADV-2006-2554 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=187910 (opens in a new tab)x_refsource_CONFIRMx_transferred
- RHSA-2006:0579 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- 20716 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 22875 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- FEDORA-2006-423 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- 21136 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- USN-302-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- http://kb.vmware.com/kb/2533126 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 24746 (opens in a new tab)vdb-entryx_refsource_OSVDBx_transferred
- 24807 (opens in a new tab)vdb-entryx_refsource_OSVDBx_transferred
- 21983 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- ADV-2006-4353 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- 21035 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- http://www.vmware.com/download/esx/esx-213-200610-patch.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- DSA-1097 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- RHSA-2006:0575 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- SUSE-SA:2006:028 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- 20061113 VMSA-2006-0009 - VMware ESX Server 3.0.0 AMD fxsave/restore issue (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- ADV-2006-1426 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- 19715 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 1015966 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- 20060419 FreeBSD Security Advisory FreeBSD-SA-06:14.fpu (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- 17600 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- http://support.avaya.com/elmodocs2/security/ASA-2006-180.htm (opens in a new tab)x_refsource_CONFIRMx_transferred
- DSA-1103 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- http://www.vmware.com/download/esx/esx-254-200610-patch.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- 21465 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- SUSE-SU-2014:0446 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- [linux-kernel] 20060419 RE: Linux 2.6.16.9 (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- ADV-2006-1475 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- 20061113 VMSA-2006-0006 - VMware ESX Server 2.5.3 Upgrade Patch 4 (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- amd-fpu-information-disclosure(25871) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- http://support.avaya.com/elmodocs2/security/ASA-2006-200.htm (opens in a new tab)x_refsource_CONFIRMx_transferred
- 20398 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 20061113 VMSA-2006-0007 - VMware ESX Server 2.1.3 Upgrade Patch 2 (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- http://security.freebsd.org/advisories/FreeBSD-SA-06:14-amd.txt (opens in a new tab)x_refsource_MISCx_transferred
- 22417 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 19724 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 20671 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 20061113 VMSA-2006-0005 - VMware ESX Server 2.5.4 Upgrade Patch 1 (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- 20914 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2006-1060 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2006-1056)Record last updated .