The remote host is missing an update to kernel-patch-2.4.18-powerpc, kernel-image-2.4.18-1-alpha announced via advisory DSA 417-1.

https://secure1.securityspace.com/smysecure/catid.html?in=DSA%20417-1

Paul Starzetz discovered a flaw in bounds checking in mremap() in the Linux kernel (present in version 2.4.x and 2.6.x) which may allow a local attacker to gain root privileges. Version 2.2 is not affected by this bug. For the stable distribution (woody) this problem has been fixed in version 2.4.18-1woody3 for the powerpc architecture. For the unstable distribution (sid) this problem will be fixed soon with newly uploaded packages. We recommend that you upgrade your kernel packages. This problem has