Title: FreeBSD vfs_cache Denial of Service Vulnerability
Severity: MODERATE
Description:
A vulnerability exists in FreeBSD's new VFS cache introduced in version 3.0 that allows a local and possibly remote user to force the kernel to consume large quantities of wired memory thus creating a denial of service condition. The new VFS cache has no way to purge entries from memory while the file is open, consuming wired memory and allowing for the denial of service (memory that cannot be swapped out).
FreeBSD versions earlier than 3.0 are not vulnerable, nor is the original 4.4BSD-Lite code.
Affected Products:
- FreeBSD FreeBSD 3.0.0
- FreeBSD FreeBSD 3.1.0
- FreeBSD FreeBSD 3.2.0
Juniper Networks provides this content via a wide variety of sources and production methods. If notified of errors or omissions in the content of this page, Juniper Networks, at its discretion, will modify or remove the page or leave the content as is, depending on various factors including but not limited to the reputation and authority of the party providing the notification. Please use the contact information displayed elsewhere on this page to report any errors or omissions regarding the content on this page.
