CVE-2006-1056

NameCVE-2006-1056
DescriptionThe 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 processers in a security-relevant fashion that was not addressed by the kernels.
SourceCVE (at NVD; oss-sec, fulldisc, OSVDB, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SuSE, Mageia, more)
ReferencesDSA-1097-1, DSA-1103
NVD severitylow (attack range: local)
Debian/oldstablenot vulnerable.
Debian/stablenot known to be vulnerable.
Debian/testingnot known to be vulnerable.
Debian/unstablenot known to be vulnerable.

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
linux-2.6 (PTS)squeeze (security), squeeze2.6.32-48squeeze6fixed
squeeze (lts)2.6.32-48squeeze11fixed

The information above is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
kernel-source-2.4.27sourcesarge2.4.27-10sarge3lowDSA-1097-1
kernel-source-2.6.8sourcesarge2.6.8-16sarge3lowDSA-1103
kfreebsd-5source(unstable)5.4-17low
linux-2.6source(unstable)2.6.16-9low
xen-3.0source(unstable)3.0.2+hg9656-1low

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