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USN-451-1: Linux kernel vulnerabilities

11 April 2007

Linux kernel vulnerabilities

Releases

Details

The kernel key management code did not correctly handle key reuse. A
local attacker could create many key requests, leading to a denial of
service. (CVE-2007-0006)

The kernel NFS code did not correctly validate NFSACL2 ACCESS requests.
If a system was serving NFS mounts, a remote attacker could send a
specially crafted packet, leading to a denial of service.
(CVE-2007-0772)

When dumping core, the kernel did not correctly handle PT_INTERP
processes. A local attacker could create situations where they could
read the contents of otherwise unreadable executable programs.
(CVE-2007-0958)

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 6.10
  • linux-image-2.6.17-11-generic - 2.6.17.1-11.37
  • linux-image-2.6.17-11-server-bigiron - 2.6.17.1-11.37
  • linux-image-2.6.17-11-sparc64-smp - 2.6.17.1-11.37
  • linux-image-2.6.17-11-powerpc - 2.6.17.1-11.37
  • linux-image-2.6.17-11-386 - 2.6.17.1-11.37
  • linux-image-2.6.17-11-powerpc-smp - 2.6.17.1-11.37
  • linux-image-2.6.17-11-sparc64 - 2.6.17.1-11.37
  • linux-image-2.6.17-11-server - 2.6.17.1-11.37
  • linux-image-2.6.17-11-powerpc64-smp - 2.6.17.1-11.37
Ubuntu 6.06
  • linux-image-2.6.15-28-amd64-generic - 2.6.15-28.53
  • linux-image-2.6.15-28-powerpc-smp - 2.6.15-28.53
  • linux-image-2.6.15-28-amd64-k8 - 2.6.15-28.53
  • linux-image-2.6.15-28-686 - 2.6.15-28.53
  • linux-image-2.6.15-28-powerpc64-smp - 2.6.15-28.53
  • linux-image-2.6.15-28-server-bigiron - 2.6.15-28.53
  • linux-image-2.6.15-28-sparc64-smp - 2.6.15-28.53
  • linux-image-2.6.15-28-server - 2.6.15-28.53
  • linux-image-2.6.15-28-k7 - 2.6.15-28.53
  • linux-image-2.6.15-28-amd64-server - 2.6.15-28.53
  • linux-image-2.6.15-28-amd64-xeon - 2.6.15-28.53
  • linux-image-2.6.15-28-386 - 2.6.15-28.53
  • linux-image-2.6.15-28-powerpc - 2.6.15-28.53
  • linux-image-2.6.15-28-sparc64 - 2.6.15-28.53

After a standard system upgrade you need to reboot your computer to
effect the necessary changes.