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Debian Security Advisory DSA 2508-1 (kfreebsd-8)
Information
Severity
Severity
Family
Family
CVSSv2 Base
CVSSv2 Base
CVSSv2 Vector
CVSSv2 Vector
Solution Type
Solution Type
Created
Created
Modified
Modified
Summary
The remote host is missing an update to kfreebsd-8 announced via advisory DSA 2508-1.
Insight
Insight
Rafal Wojtczuk from Bromium discovered that FreeBSD wasn't handling correctly uncanonical return addresses on Intel amd64 CPUs, allowing privilege escalation to kernel for local users. For the stable distribution (squeeze), this problem has been fixed in version 8.1+dfsg-8+squeeze3. For the testing distribution (wheezy), this problem has been fixed in version 8.3-4. For the unstable distribution (sid), this problem has been fixed in version 8.3-4.
Solution
Solution
We recommend that you upgrade your kfreebsd-8 packages.