Ubuntu Security Notices
USN-508-1

USN-508-1: Linux kernel vulnerabilities

Publication date

31 August 2007

Overview

Linux kernel vulnerabilities

Releases

6.06

Packages

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...

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 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

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

Learn more about how to get the fixes.

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.

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

Ubuntu Release	Package Version
6.06 dapper	linux-image-2.6.15-29-amd64-xeon – 2.6.15-29.58
	linux-image-2.6.15-29-hppa32-smp – 2.6.15-29.58
	linux-image-2.6.15-29-server-bigiron – 2.6.15-29.58
	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-powerpc – 2.6.15-29.58
	linux-image-2.6.15-29-sparc64 – 2.6.15-29.58
	linux-image-2.6.15-29-amd64-k8 – 2.6.15-29.58
	linux-image-2.6.15-29-hppa32 – 2.6.15-29.58
	linux-image-2.6.15-29-k7 – 2.6.15-29.58
	linux-image-2.6.15-29-hppa64-smp – 2.6.15-29.58
	linux-image-2.6.15-29-mckinley-smp – 2.6.15-29.58
	linux-image-2.6.15-29-amd64-generic – 2.6.15-29.58
	linux-image-2.6.15-29-itanium-smp – 2.6.15-29.58
	linux-image-2.6.15-29-amd64-server – 2.6.15-29.58
	linux-image-2.6.15-29-itanium – 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-mckinley – 2.6.15-29.58
	linux-image-2.6.15-29-hppa64 – 2.6.15-29.58
	linux-image-2.6.15-29-sparc64-smp – 2.6.15-29.58

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References

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