USN-508-1: Linux kernel vulnerabilities

31 August 2007

linux-source-2.6.15 vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 6.06 LTS

Software Description

  • linux-source-2.6.15

Details

A buffer overflow was discovered in the Moxa serial driver. Local attackers could execute arbitrary code and gain root privileges. (CVE-2005-0504)

A flaw was discovered in the IPv6 stack’s handling of type 0 route headers. By sending a specially crafted IPv6 packet, a remote attacker could cause a denial of service between two IPv6 hosts. (CVE-2007-2242)

A flaw in the sysfs_readdir function allowed a local user to cause a denial of service by dereferencing a NULL pointer. (CVE-2007-3104)

A buffer overflow was discovered in the random number generator. In environments with granular assignment of root privileges, a local attacker could gain additional privileges. (CVE-2007-3105)

It was discovered that certain setuid-root processes did not correctly reset process death signal handlers. A local user could manipulate this to send signals to processes they would not normally have access to. (CVE-2007-3848)

It was discovered that the aacraid SCSI driver did not correctly check permissions on certain ioctls. A local attacker could cause a denial of service or gain privileges. (CVE-2007-4308)

Update instructions

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

Ubuntu 6.06 LTS
linux-image-2.6.15-29-386 - 2.6.15-29.58
linux-image-2.6.15-29-686 - 2.6.15-29.58
linux-image-2.6.15-29-amd64-generic - 2.6.15-29.58
linux-image-2.6.15-29-amd64-k8 - 2.6.15-29.58
linux-image-2.6.15-29-amd64-server - 2.6.15-29.58
linux-image-2.6.15-29-amd64-xeon - 2.6.15-29.58
linux-image-2.6.15-29-hppa32 - 2.6.15-29.58
linux-image-2.6.15-29-hppa32-smp - 2.6.15-29.58
linux-image-2.6.15-29-hppa64 - 2.6.15-29.58
linux-image-2.6.15-29-hppa64-smp - 2.6.15-29.58
linux-image-2.6.15-29-itanium - 2.6.15-29.58
linux-image-2.6.15-29-itanium-smp - 2.6.15-29.58
linux-image-2.6.15-29-k7 - 2.6.15-29.58
linux-image-2.6.15-29-mckinley - 2.6.15-29.58
linux-image-2.6.15-29-mckinley-smp - 2.6.15-29.58
linux-image-2.6.15-29-powerpc - 2.6.15-29.58
linux-image-2.6.15-29-powerpc-smp - 2.6.15-29.58
linux-image-2.6.15-29-powerpc64-smp - 2.6.15-29.58
linux-image-2.6.15-29-server - 2.6.15-29.58
linux-image-2.6.15-29-server-bigiron - 2.6.15-29.58
linux-image-2.6.15-29-sparc64 - 2.6.15-29.58
linux-image-2.6.15-29-sparc64-smp - 2.6.15-29.58

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

ATTENTION: Due to an unavoidable ABI change the kernel updates have been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. If you use linux-restricted-modules, you have to update that package as well to get modules which work with the new kernel version. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-386, linux-powerpc, linux-amd64-generic), a standard system upgrade will automatically perform this as well.

References