CVE-2006-1056 Information disclosure in n/a
Local attackers can exploit AMD64 floating-point register handling to leak sensitive data, such as cryptographic keys, from other processes.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2006-1056?
CVE-2006-1056 is a low-severity vulnerability in Freebsd Freebsd, published on 20 Apr 2006. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Weakness: CWE-310
Which versions are affected by CVE-2006-1056?
It affects 2 products.
Products include Freebsd Freebsd, Linux kernel.
How do I fix CVE-2006-1056?
Apply the vendor's patch.
Is CVE-2006-1056 being exploited?
There is no known exploitation of CVE-2006-1056 in the wild and no public exploit code.
Other vulnerabilities in Freebsd Freebsd
Sources
Also known as GHSA-g998-qjcg-g7jh.