FreeBSD VuXML: Documenting security issues in FreeBSD and the FreeBSD Ports Collection

FreeBSD -- Local kernel memory disclosure

Affected systems
6.0 < FreeBSD < 6.0_4

Details

VuXML ID 7a4f2aca-9d40-11da-8c1d-000e0c2e438a
Discovery 2006-01-25
Entry 2006-02-14
Modified 2006-06-09

Problem description:

A buffer allocated from the kernel stack may not be completely initialized before being copied to userland. [CVE-2006-0379]

A logic error in computing a buffer length may allow too much data to be copied into userland. [CVE-2006-0380]

Impact:

Portions of kernel memory may be disclosed to local users. Such memory might contain sensitive information, such as portions of the file cache or terminal buffers. This information might be directly useful, or it might be leveraged to obtain elevated privileges in some way. For example, a terminal buffer might include a user-entered password.

Workaround:

No workaround is available.

References

CVE Name CVE-2006-0379
CVE Name CVE-2006-0380
FreeBSD Advisory SA-06:06.kmem