|Description||The Linux kernel before 184.108.40.206 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.|
|Source||CVE (at NVD; oss-sec, fulldisc, OSVDB, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SuSE, Mageia, more)|
|NVD severity||low (attack range: local)|
|Debian/stable||not known to be vulnerable.|
|Debian/testing||not known to be vulnerable.|
|Debian/unstable||not known to be vulnerable.|
Vulnerable and fixed packages
The table below lists information on source packages.
|linux-2.6 (PTS)||squeeze (security), squeeze||2.6.32-48squeeze6||fixed|
The information above is based on the following data on fixed versions.