CVE-2006-1056

Publication date 20 April 2006

Last updated 24 July 2024

Ubuntu priority

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.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
kfreebsd-5	7.04 feisty	Fixed 5.4-17
	6.10 edgy	Fixed 5.4-17
	6.06 LTS dapper	Ignored end of life, was needed
linux-source-2.6.15	7.04 feisty	Not in release
	6.10 edgy	Not in release
	6.06 LTS dapper	Fixed 2.6.15-29.58
linux-source-2.6.17	7.04 feisty	Not in release
	6.10 edgy	Fixed 2.6.17.1-12.40
	6.06 LTS dapper	Not in release
xen-3.0	7.04 feisty	Fixed 3.0.3-0ubuntu1
	6.10 edgy	Fixed 3.0.3-0ubuntu1
	6.06 LTS dapper	Not in release
xen-3.1	7.04 feisty	Not in release
	6.10 edgy	Not in release
	6.06 LTS dapper	Not in release

CVE-2006-1056

Status

References

Related Ubuntu Security Notices (USN)

Other references