Sophos Anti-Virus for Linux: problem intercepting files on kernels 2.6 to 2.6.8 on kernel-mode NFS server

  • Article ID: 14346
  • Updated: 09 Jan 2014


Until the NFS component of kernel 2.6.9 was released on 19 October, 2004, Sophos Anti-Virus for Linux was unable to intercept files on NFS servers using kernels 2.6 to 2.6.8 in kernel mode.  This issue only affects On-Access scanning.

First seen in
Sophos Anti-Virus for Linux 9.0.0
Sophos Anti-Virus for Linux 7.5.13
Sophos Anti-Virus for Linux


This problem was caused by incomplete implementation of filesystem objects in the 2.6.8 and earlier 2.6 series kernels. The kernels do not provide the Sophos on-access scanner with sufficient information to be able to scan the file, and therefore it is skipped.

Note that SUSE Linux is unaffected because SUSE have backported a fix to their 2.6.8 kernels.

What To Do

Upgrade your operating system to use the NFS component of kernel 2.6.9 or above.

Until you upgrade, you can make Sophos Anti-Virus check these files by using a scheduled/on-demand scan.

If you need more information or guidance, then please contact technical support.

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