CVE-2006-1056: Low severity FreeBSD FreeBSD vulnerability

Published Apr 20, 2006
·
Updated

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.

Affected Software

143 affected components
FreeBSD FreeBSD
Linux Linux kernel<=2.6.16.8
Linux Linux kernel=2.6.0
Linux Linux kernel=2.6.0-test1
Linux Linux kernel=2.6.0-test10
Linux Linux kernel=2.6.0-test11
Linux Linux kernel=2.6.0-test2
Linux Linux kernel=2.6.0-test3
Linux Linux kernel=2.6.0-test4
Linux Linux kernel=2.6.0-test5
Linux Linux kernel=2.6.0-test6
Linux Linux kernel=2.6.0-test7
Linux Linux kernel=2.6.0-test8
Linux Linux kernel=2.6.0-test9
Linux Linux kernel=2.6.1
Linux Linux kernel=2.6.1-rc1
Linux Linux kernel=2.6.1-rc2
Linux Linux kernel=2.6.1-rc3
Linux Linux kernel=2.6.2
Linux Linux kernel=2.6.2-rc1
Linux Linux kernel=2.6.2-rc2
Linux Linux kernel=2.6.2-rc3
Linux Linux kernel=2.6.3
Linux Linux kernel=2.6.3-rc1
Linux Linux kernel=2.6.3-rc2
Linux Linux kernel=2.6.3-rc3
Linux Linux kernel=2.6.3-rc4
Linux Linux kernel=2.6.4
Linux Linux kernel=2.6.4-rc1
Linux Linux kernel=2.6.4-rc2
Linux Linux kernel=2.6.4-rc3
Linux Linux kernel=2.6.5
Linux Linux kernel=2.6.5-rc1
Linux Linux kernel=2.6.5-rc2
Linux Linux kernel=2.6.5-rc3
Linux Linux kernel=2.6.6
Linux Linux kernel=2.6.6-rc1
Linux Linux kernel=2.6.6-rc2
Linux Linux kernel=2.6.6-rc3
Linux Linux kernel=2.6.7
Linux Linux kernel=2.6.7-rc1
Linux Linux kernel=2.6.7-rc2
Linux Linux kernel=2.6.7-rc3
Linux Linux kernel=2.6.8
Linux Linux kernel=2.6.8-rc1
Linux Linux kernel=2.6.8-rc2
Linux Linux kernel=2.6.8-rc3
Linux Linux kernel=2.6.8-rc4
Linux Linux kernel=2.6.9
Linux Linux kernel=2.6.9-2.6.20
Linux Linux kernel=2.6.9-rc1
Linux Linux kernel=2.6.9-rc2
Linux Linux kernel=2.6.9-rc3
Linux Linux kernel=2.6.9-rc4
Linux Linux kernel=2.6.10
Linux Linux kernel=2.6.10-rc1
Linux Linux kernel=2.6.10-rc2
Linux Linux kernel=2.6.10-rc3
Linux Linux kernel=2.6.11
Linux Linux kernel=2.6.11-rc1
Linux Linux kernel=2.6.11-rc2
Linux Linux kernel=2.6.11-rc3
Linux Linux kernel=2.6.11-rc4
Linux Linux kernel=2.6.11-rc5
Linux Linux kernel=2.6.11.1
Linux Linux kernel=2.6.11.2
Linux Linux kernel=2.6.11.3
Linux Linux kernel=2.6.11.4
Linux Linux kernel=2.6.11.5
Linux Linux kernel=2.6.11.6
Linux Linux kernel=2.6.11.7
Linux Linux kernel=2.6.11.8
Linux Linux kernel=2.6.11.9
Linux Linux kernel=2.6.11.10
Linux Linux kernel=2.6.11.11
Linux Linux kernel=2.6.11.12
Linux Linux kernel=2.6.12-rc1
Linux Linux kernel=2.6.12-rc2
Linux Linux kernel=2.6.12-rc3
Linux Linux kernel=2.6.12-rc4
Linux Linux kernel=2.6.12-rc5
Linux Linux kernel=2.6.12-rc6
Linux Linux kernel=2.6.12.1
Linux Linux kernel=2.6.12.2
Linux Linux kernel=2.6.12.3
Linux Linux kernel=2.6.12.4
Linux Linux kernel=2.6.12.5
Linux Linux kernel=2.6.12.6
Linux Linux kernel=2.6.13
Linux Linux kernel=2.6.13-rc1
Linux Linux kernel=2.6.13-rc2
Linux Linux kernel=2.6.13-rc3
Linux Linux kernel=2.6.13-rc4
Linux Linux kernel=2.6.13-rc5
Linux Linux kernel=2.6.13-rc6
Linux Linux kernel=2.6.13-rc7
Linux Linux kernel=2.6.13.1
Linux Linux kernel=2.6.13.2
Linux Linux kernel=2.6.13.3
Linux Linux kernel=2.6.13.4
Linux Linux kernel=2.6.14
Linux Linux kernel=2.6.14-rc1
Linux Linux kernel=2.6.14-rc2
Linux Linux kernel=2.6.14-rc3
Linux Linux kernel=2.6.14-rc4
Linux Linux kernel=2.6.14-rc5
Linux Linux kernel=2.6.14.1
Linux Linux kernel=2.6.14.2
Linux Linux kernel=2.6.14.3
Linux Linux kernel=2.6.14.4
Linux Linux kernel=2.6.14.5
Linux Linux kernel=2.6.14.6
Linux Linux kernel=2.6.14.7
Linux Linux kernel=2.6.15
Linux Linux kernel=2.6.15-rc1
Linux Linux kernel=2.6.15-rc3
Linux Linux kernel=2.6.15-rc4
Linux Linux kernel=2.6.15-rc5
Linux Linux kernel=2.6.15-rc6
Linux Linux kernel=2.6.15-rc7
Linux Linux kernel=2.6.15.1
Linux Linux kernel=2.6.15.2
Linux Linux kernel=2.6.15.3
Linux Linux kernel=2.6.15.4
Linux Linux kernel=2.6.15.5
Linux Linux kernel=2.6.15.6
Linux Linux kernel=2.6.15.7
Linux Linux kernel=2.6.16
Linux Linux kernel=2.6.16-rc1
Linux Linux kernel=2.6.16-rc2
Linux Linux kernel=2.6.16-rc3
Linux Linux kernel=2.6.16-rc4
Linux Linux kernel=2.6.16-rc5
Linux Linux kernel=2.6.16-rc6
Linux Linux kernel=2.6.16.1
Linux Linux kernel=2.6.16.2
Linux Linux kernel=2.6.16.3
Linux Linux kernel=2.6.16.4
Linux Linux kernel=2.6.16.5
Linux Linux kernel=2.6.16.6
Linux Linux kernel=2.6.16.7
Linux Linux kernel=2.6.16_rc7
Linux Linux kernel=2.6_test9_cvs

Remediation

Patch Available

http://secunia.com/advisories/19715

Patch Available

http://secunia.com/advisories/19724

Patch Available

http://www.securityfocus.com/bid/17600

Event History

Apr 20, 2006
CVE Published
10:02 AM
CVE Published
via MITRE·02:00 PM
Data Sourced
via MITRE·02:00 PM
Description
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Frequently Asked Questions

1

What is the severity of CVE-2006-1056?

CVE-2006-1056 has a medium severity rating due to potential information disclosure vulnerabilities in certain Linux and FreeBSD kernels.

2

What are the affected systems for CVE-2006-1056?

CVE-2006-1056 affects Linux kernels versions prior to 2.6.16.9 and FreeBSD kernels on AMD64 and certain AuthenticAMD processors.

3

How do I fix CVE-2006-1056?

To fix CVE-2006-1056, upgrade your Linux kernel to version 2.6.16.9 or later or update your FreeBSD system as necessary.

4

What vulnerabilities does CVE-2006-1056 introduce?

CVE-2006-1056 allows one process to potentially infer the state of another process, leading to information disclosure.

5

When was CVE-2006-1056 reported?

CVE-2006-1056 was reported in March 2006, highlighting risks related to the saving and restoring of x87 registers.

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