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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,…

Low2.1EPSS 0.46%
Published
Updated
Reserved
Assigned by
redhat

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.

Scores

CVSS scores of CVE-2006-1056, by who scored it
Scored byCVSSScoreVector
NVDNVD · Modified2.0Low2.1AV:L/AC:L/Au:N/C:P/I:N/A:N
EPSS (exploitation in 30 days)
0.46% · top 60% of all CVEs (6 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.

Weakness

Affected products

  • n/a

    • affected n/a

References (49)

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .