CVE-2008-2729

Publication date 30 June 2008

Last updated 24 July 2024

arch/x86_64/lib/copy_user.S in the Linux kernel before 2.6.19 on some AMD64 systems does not erase destination memory locations after an exception during kernel memory copy, which allows local users to obtain sensitive information.

From the Ubuntu Security Team

The copy_to_user routine in the kernel did not correctly clear memory destination addresses when running on 64bit kernels. A local attacker could exploit this to gain access to sensitive kernel memory, leading to a loss of privacy.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
linux	8.04 LTS hardy	Not affected
	7.10 gutsy	Not in release
	7.04 feisty	Not in release
	6.10 edgy	Not in release
	6.06 LTS dapper	Not in release
linux-source-2.6.15	8.04 LTS hardy	Not in release
	7.10 gutsy	Not in release
	7.04 feisty	Not in release
	6.10 edgy	Not in release
	6.06 LTS dapper	Fixed 2.6.15-52.69
linux-source-2.6.17	8.04 LTS hardy	Not in release
	7.10 gutsy	Not in release
	7.04 feisty	Not in release
	6.10 edgy	Not affected
	6.06 LTS dapper	Not in release
linux-source-2.6.20	8.04 LTS hardy	Not in release
	7.10 gutsy	Not in release
	7.04 feisty	Not affected
	6.10 edgy	Not in release
	6.06 LTS dapper	Not in release
linux-source-2.6.22	8.04 LTS hardy	Not in release
	7.10 gutsy	Not affected
	7.04 feisty	Not in release
	6.10 edgy	Not in release
	6.06 LTS dapper	Not in release

Notes

kees

backported to Dapper

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
linux	Vendor: ftp://updates.redhat.com/enterprise/4AS/en/os/SRPMS/kernel-2.6.9-67.0.20.EL.src.rpm:SOURCES/linux-2.6.9-x86_64-copy_user-zero-tail.patch

CVE-2008-2729

From the Ubuntu Security Team

Status

Notes

kees

Patch details

References

Related Ubuntu Security Notices (USN)

Other references