Bug 1618025 (CVE-2006-1056)

Summary: CVE-2006-1056 security flaw
Product: [Other] Security Response Reporter: Stephen Herr <sherr>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED CURRENTRELEASE QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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Last Closed: 2018-08-16 12:09:12 UTC Type: ---
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Description Stephen Herr 2018-08-16 12:09:06 UTC
Flaw bug created to hold information about an old flaw we knew something about. For more details see the MITRE CVE description.

Comment 1 Stephen Herr 2018-08-16 16:37:59 UTC
MITRE 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.