Updated kernel packages fix the AMD64 ptrace vulnerability
1.
Gentoo Linux Security Advisory
Version Information
| Advisory Reference |
GLSA 200402-06 / Kernel |
| Release Date |
February 17, 2004 |
| Latest Revision |
February 17, 2004: 01 |
| Impact |
normal |
| Exploitable |
local |
| Package |
Vulnerable versions |
Unaffected versions |
Architecture(s) |
| sys-kernel/ck-sources |
<
2.6.2 |
>=
2.6.2 |
AMD64
|
| sys-kernel/development-sources |
<
2.6.2 |
>=
2.6.2 |
AMD64
|
| sys-kernel/gentoo-dev-sources |
<
2.6.2 |
>=
2.6.2 |
AMD64
|
| sys-kernel/gentoo-sources |
<
2.4.22-r6 |
>=
2.4.22-r6 |
AMD64
|
| sys-kernel/gentoo-test-sources |
<
2.6.2 |
>=
2.6.2-r1 |
AMD64
|
| sys-kernel/gs-sources |
<
2.4.25_pre7-r1 |
>=
2.4.25_pre7-r1 |
AMD64
|
| sys-kernel/vanilla-prepatch-sources |
<
2.4.25_rc3 |
>=
2.4.25_rc3 |
AMD64
|
| sys-kernel/vanilla-sources |
<
2.4.24-r1 |
>=
2.4.24-r1 |
AMD64
|
Related bugreports:
No related gentoo bugreports
Synopsis
A vulnerability has been discovered by in the ptrace emulation code for
AMD64 platforms when eflags are processed, allowing a local user to obtain
elevated priveleges.
2.
Impact Information
Description
A vulnerability has been discovered by Andi Kleen in the ptrace emulation
code for AMD64 platforms when eflags are processed, allowing a local user
to obtain elevated priveleges. The Common Vulnerabilities and Exposures
project, http://cve.mitre.org, has assigned CAN-2004-0001 to this issue.
Impact
Only users of the AMD64 platform are affected: in this scenario, a user may
be able to obtain elevated priveleges, including root access. However, no
public exploit is known for the vulnerability at this time.
3.
Resolution Information
Workaround
There is no temporary workaround - a kernel upgrade is required. A list of
unaffected kernels is provided along with this announcement.
Resolution
Users are encouraged to upgrade to the latest available sources for
their system:
Code Listing 3.1: Resolution |
# emerge sync
# emerge -pv your-favourite-sources
# emerge your-favourite-sources
# # Follow usual procedure for compiling and installing a kernel.
# # If you use genkernel, run genkernel as you would do normally.
|
Code Listing 3.2: Resolution |
# # IF YOUR KERNEL IS MARKED as "remerge required!" THEN
# # YOU SHOULD UPDATE YOUR KERNEL EVEN IF PORTAGE
# # REPORTS THAT THE SAME VERSION IS INSTALLED.
|
|
