Your submission was sent successfully! Close

You have successfully unsubscribed! Close

Thank you for signing up for our newsletter!
In these regular emails you will find the latest updates about Ubuntu and upcoming events where you can meet our team.Close

USN-464-1: Linux kernel vulnerabilities

24 May 2007

Linux kernel vulnerabilities

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Releases

Details

Philipp Richter discovered that the AppleTalk protocol handler did
not sufficiently verify the length of packets. By sending a crafted
AppleTalk packet, a remote attacker could exploit this to crash the
kernel. (CVE-2007-1357)

Gabriel Campana discovered that the do_ipv6_setsockopt() function did
not sufficiently verifiy option values for IPV6_RTHDR. A local
attacker could exploit this to trigger a kernel crash. (CVE-2007-1388)

A Denial of Service vulnerability was discovered in the
nfnetlink_log() netfilter function. A remote attacker could exploit
this to trigger a kernel crash. (CVE-2007-1496)

The connection tracking module for IPv6 did not properly handle the
status field when reassembling fragmented packets, so that the final
packet always had the 'established' state. A remote attacker could
exploit this to bypass intended firewall rules. (CVE-2007-1497)

Masayuki Nakagawa discovered an error in the flowlabel handling of
IPv6 network sockets. A local attacker could exploit this to crash
the kernel. (CVE-2007-1592)

The do_dccp_getsockopt() function did not sufficiently verify the
optlen argument. A local attacker could exploit this to read kernel
memory (which might expose sensitive data) or cause a kernel crash.
This only affects Ubuntu 7.04. (CVE-2007-1730)

The IPv4 and DECnet network protocol handlers incorrectly declared
an array variable so that it became smaller than intended. By sending
crafted packets over a netlink socket, a local attacker could exploit
this to crash the kernel. (CVE-2007-2172)

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 7.04
  • linux-image-2.6.20-16-386 - 2.6.20-16.28
  • linux-image-2.6.20-16-powerpc - 2.6.20-16.28
  • linux-image-2.6.20-16-server - 2.6.20-16.28
  • linux-image-2.6.20-16-mckinley - 2.6.20-16.28
  • linux-image-2.6.20-16-sparc64-smp - 2.6.20-16.28
  • linux-image-2.6.20-16-hppa32 - 2.6.20-16.28
  • linux-image-2.6.20-16-powerpc64-smp - 2.6.20-16.28
  • linux-image-2.6.20-16-itanium - 2.6.20-16.28
  • linux-image-2.6.20-16-powerpc-smp - 2.6.20-16.28
  • linux-image-2.6.20-16-generic - 2.6.20-16.28
  • linux-image-2.6.20-16-sparc64 - 2.6.20-16.28
  • linux-image-2.6.20-16-hppa64 - 2.6.20-16.28
  • linux-image-2.6.20-16-lowlatency - 2.6.20-16.28
  • linux-image-2.6.20-16-server-bigiron - 2.6.20-16.28
Ubuntu 6.10
  • linux-image-2.6.17-11-mckinley - 2.6.17.1-11.38
  • linux-image-2.6.17-11-generic - 2.6.17.1-11.38
  • linux-image-2.6.17-11-hppa32 - 2.6.17.1-11.38
  • linux-image-2.6.17-11-server-bigiron - 2.6.17.1-11.38
  • linux-image-2.6.17-11-sparc64-smp - 2.6.17.1-11.38
  • linux-image-2.6.17-11-powerpc - 2.6.17.1-11.38
  • linux-image-2.6.17-11-itanium - 2.6.17.1-11.38
  • linux-image-2.6.17-11-386 - 2.6.17.1-11.38
  • linux-image-2.6.17-11-powerpc-smp - 2.6.17.1-11.38
  • linux-image-2.6.17-11-sparc64 - 2.6.17.1-11.38
  • linux-image-2.6.17-11-server - 2.6.17.1-11.38
  • linux-image-2.6.17-11-powerpc64-smp - 2.6.17.1-11.38
  • linux-image-2.6.17-11-hppa64 - 2.6.17.1-11.38
Ubuntu 6.06
  • linux-image-2.6.15-28-amd64-generic - 2.6.15-28.55
  • linux-image-2.6.15-28-sparc64-smp - 2.6.15-28.55
  • linux-image-2.6.15-28-powerpc64-smp - 2.6.15-28.55
  • linux-image-2.6.15-28-hppa32-smp - 2.6.15-28.55
  • linux-image-2.6.15-28-386 - 2.6.15-28.55
  • linux-image-2.6.15-28-powerpc - 2.6.15-28.55
  • linux-image-2.6.15-28-hppa64-smp - 2.6.15-28.55
  • linux-image-2.6.15-28-itanium-smp - 2.6.15-28.55
  • linux-image-2.6.15-28-mckinley-smp - 2.6.15-28.55
  • linux-image-2.6.15-28-itanium - 2.6.15-28.55
  • linux-image-2.6.15-28-amd64-server - 2.6.15-28.55
  • linux-image-2.6.15-28-powerpc-smp - 2.6.15-28.55
  • linux-image-2.6.15-28-amd64-k8 - 2.6.15-28.55
  • linux-image-2.6.15-28-server-bigiron - 2.6.15-28.55
  • linux-image-2.6.15-28-server - 2.6.15-28.55
  • linux-image-2.6.15-28-hppa64 - 2.6.15-28.55
  • linux-image-2.6.15-28-686 - 2.6.15-28.55
  • linux-image-2.6.15-28-hppa32 - 2.6.15-28.55
  • linux-image-2.6.15-28-mckinley - 2.6.15-28.55
  • linux-image-2.6.15-28-k7 - 2.6.15-28.55
  • linux-image-2.6.15-28-amd64-xeon - 2.6.15-28.55
  • linux-image-2.6.15-28-sparc64 - 2.6.15-28.55

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