ISS X-Force Database: linux-uncanonical-addr-dos(25869): Linux kernel uncanonical return address denial of service

Linux kernel uncanonical return address denial of service

linux-uncanonical-addr-dos (25869)

Low Risk

Description:

Linux kernel is vulnerable to a denial of service, caused by improper handling of uncanonical return addresses on Intel EM64T CPUs. A local attacker could exploit this vulnerability to cause an exception to be reported in the SYSRET, which would result in the kernel exception handler running on the user stack with the wrong GS, leading to a denial of service condition.

Platforms Affected:

Canonical, Ubuntu 5.04
Canonical, Ubuntu 5.10
Canonical, Ubuntu 6.06 LTS
Debian, Debian Linux 3.1
Linux, Kernel 2.6.0 test1
Linux, Kernel 2.6.0 test10
Linux, Kernel 2.6.0 test11
Linux, Kernel 2.6.0 test2
Linux, Kernel 2.6.0 test3
Linux, Kernel 2.6.0 test4
Linux, Kernel 2.6.0
Linux, Kernel 2.6.0 test6
Linux, Kernel 2.6.0 test7
Linux, Kernel 2.6.0 test8
Linux, Kernel 2.6.0 test9
Linux, Kernel 2.6.0 test9-cvs
Linux, Kernel 2.6.0 test5
Linux, Kernel 2.6.1 rc2
Linux, Kernel 2.6.1 rc1
Linux, Kernel 2.6.1 rc3
Linux, Kernel 2.6.1
Linux, Kernel 2.6.10 rc2
Linux, Kernel 2.6.10 rc1
Linux, Kernel 2.6.10 rc3
Linux, Kernel 2.6.10
Linux, Kernel 2.6.11 rc5
Linux, Kernel 2.6.11 rc4
Linux, Kernel 2.6.11 rc3
Linux, Kernel 2.6.11 rc1
Linux, Kernel 2.6.11 rc2
Linux, Kernel 2.6.11
Linux, Kernel 2.6.11.1
Linux, Kernel 2.6.11.10
Linux, Kernel 2.6.11.11
Linux, Kernel 2.6.11.12
Linux, Kernel 2.6.11.2
Linux, Kernel 2.6.11.3
Linux, Kernel 2.6.11.4
Linux, Kernel 2.6.11.5
Linux, Kernel 2.6.11.6
Linux, Kernel 2.6.11.7
Linux, Kernel 2.6.11.8
Linux, Kernel 2.6.11.9
Linux, Kernel 2.6.12 rc6
Linux, Kernel 2.6.12 rc1
Linux, Kernel 2.6.12 rc2
Linux, Kernel 2.6.12 rc3
Linux, Kernel 2.6.12 rc4
Linux, Kernel 2.6.12 rc5
Linux, Kernel 2.6.12.1
Linux, Kernel 2.6.12.2
Linux, Kernel 2.6.12.3
Linux, Kernel 2.6.12.4
Linux, Kernel 2.6.12.5
Linux, Kernel 2.6.12.6
Linux, Kernel 2.6.13
Linux, Kernel 2.6.13 rc2
Linux, Kernel 2.6.13 rc1
Linux, Kernel 2.6.13 rc7
Linux, Kernel 2.6.13 rc6
Linux, Kernel 2.6.13 rc5
Linux, Kernel 2.6.13 rc4
Linux, Kernel 2.6.13 rc3
Linux, Kernel 2.6.13.1
Linux, Kernel 2.6.13.2
Linux, Kernel 2.6.13.3
Linux, Kernel 2.6.13.4
Linux, Kernel 2.6.14 rc1
Linux, Kernel 2.6.14 rc4
Linux, Kernel 2.6.14 rc3
Linux, Kernel 2.6.14
Linux, Kernel 2.6.14 rc2
Linux, Kernel 2.6.14 rc5
Linux, Kernel 2.6.14.1
Linux, Kernel 2.6.14.2
Linux, Kernel 2.6.14.3
Linux, Kernel 2.6.14.4
Linux, Kernel 2.6.14.5
Linux, Kernel 2.6.14.6
Linux, Kernel 2.6.14.7
Linux, Kernel 2.6.15
Linux, Kernel 2.6.15 rc5
Linux, Kernel 2.6.15 rc2
Linux, Kernel 2.6.15 rc1
Linux, Kernel 2.6.15 rc3
Linux, Kernel 2.6.15 rc4
Linux, Kernel 2.6.15 rc6
Linux, Kernel 2.6.15 rc7
Linux, Kernel 2.6.15.1
Linux, Kernel 2.6.15.2
Linux, Kernel 2.6.15.3
Linux, Kernel 2.6.15.4
Linux, Kernel 2.6.15.5
Linux, Kernel 2.6.15.6
Linux, Kernel 2.6.15.7
Linux, Kernel 2.6.16
Linux, Kernel 2.6.16 rc7
Linux, Kernel 2.6.16 rc6
Linux, Kernel 2.6.16 rc4
Linux, Kernel 2.6.16 rc5
Linux, Kernel 2.6.16 rc3
Linux, Kernel 2.6.16 rc2
Linux, Kernel 2.6.16 rc1
Linux, Kernel 2.6.16.1
Linux, Kernel 2.6.16.2
Linux, Kernel 2.6.16.3
Linux, Kernel 2.6.16.4
Linux, Kernel 2.6.2
Linux, Kernel 2.6.2 rc3
Linux, Kernel 2.6.2 rc2
Linux, Kernel 2.6.2 rc1
Linux, Kernel 2.6.3 rc1
Linux, Kernel 2.6.3
Linux, Kernel 2.6.3 rc4
Linux, Kernel 2.6.3 rc3
Linux, Kernel 2.6.3 rc2
Linux, Kernel 2.6.4
Linux, Kernel 2.6.4 rc3
Linux, Kernel 2.6.4 rc2
Linux, Kernel 2.6.4 rc1
Linux, Kernel 2.6.5
Linux, Kernel 2.6.5 rc3
Linux, Kernel 2.6.5 rc2
Linux, Kernel 2.6.5 rc1
Linux, Kernel 2.6.6 rc1
Linux, Kernel 2.6.6
Linux, Kernel 2.6.6 rc3
Linux, Kernel 2.6.6 rc2
Linux, Kernel 2.6.7
Linux, Kernel 2.6.7 rc3
Linux, Kernel 2.6.7 rc2
Linux, Kernel 2.6.7 rc1
Linux, Kernel 2.6.8
Linux, Kernel 2.6.8 rc4
Linux, Kernel 2.6.8 rc3
Linux, Kernel 2.6.8 rc2
Linux, Kernel 2.6.8 rc1
Linux, Kernel 2.6.9 final
Linux, Kernel 2.6.9
Linux, Kernel 2.6.9 rc4
Linux, Kernel 2.6.9 rc3
Linux, Kernel 2.6.9 rc2
Linux, Kernel 2.6.9 rc1
MandrakeSoft, Mandrake Linux 2006
MandrakeSoft, Mandrake Linux 2006 X86_64
MandrakeSoft, Mandrake Linux Corporate Server 3.0 X86_64
MandrakeSoft, Mandrake Linux Corporate Server 3.0
MandrakeSoft, Mandrake Multi Network Firewall 2.0
Novell, Linux Desktop 9
Novell, Open Enterprise Server
Novell, Open Enterprise Server
Novell, UnitedLinux 1.0
RedHat, Enterprise Linux 3 WS
RedHat, Enterprise Linux 3 ES
RedHat, Enterprise Linux 3 AS
RedHat, Enterprise Linux 3 Desktop
RedHat, Enterprise Linux 4 AS
RedHat, Enterprise Linux 4 Desktop
RedHat, Enterprise Linux 4 ES
RedHat, Enterprise Linux 4 WS
SuSE, SuSE Linux 10.0
SuSE, SuSE Linux 10.1
SuSE, SuSE Linux 9.1
SuSE, SuSE Linux 9.2
SuSE, SuSE Linux 9.3
SuSE, SuSE Linux Desktop 1.0
SuSE, SuSE Linux Enterprise Server 8.0
SuSE, SuSE Linux Enterprise Server 9.0
SuSE, SuSE SLES 9

Remedy:

Upgrade to the latest stable version of Linux kernel (2.6.16.9 or later), available from The Linux Kernel Archives. See References.

For Red Hat Linux 4:
Refer to RHSA-2006:0493-6 for patch, upgrade, or suggested workaround information. See References.

For Red Hat Linux 3:
Refer to RHSA-2006:0437-22 for patch, upgrade, or suggested workaround information. See References.

For Debian GNU/Linux:
Refer to DSA-1103-1 for patch, upgrade, or suggested workaround information. See References.

For SUSE Linux:
Refer to SUSE-SA:2006:028 for patch, upgrade, or suggested workaround information. See References.

For SUSE Linux:
Refer to SUSE-SA:2006:047 for patch, upgrade, or suggested workaround information. See References.

For other distributions:
Contact your vendor for upgrade or patch information.

Consequences:

Denial of Service

References:

The Linux Kernel Archives Web site, ChangeLog-2.6.16.5 at http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.16.5.
The The Linux Kernel Archives Web site, The Linux Kernel Archives at http://www.kernel.org/.
ASA-2006-161: kernel security update (RHSA-2006-0493)
ASA-2006-180: Updated kernel packages for Red Hat Enterprise Linux 3 Update 8 (RHSA-2006-0437)
BID-17541: Linux Kernel Intel EM64T SYSRET Local Denial of Service Vulnerability
CVE-2006-0744: Linux kernel before 2.6.16.5 does not properly handle uncanonical return addresses on Intel EM64T CPUs, which reports an exception in the SYSRET instead of the next instruction, which causes the kernel exception handler to run on the user stack with the wrong GS.
DSA-1103: kernel-source-2.6.8 -- several vulnerabilities
MDKSA-2006:086: Updated kernel packages fix multiple vulnerabilities
MDKSA-2006:150: Updated kernel packages fix multiple vulnerabilities
OSVDB ID: 24639: Linux Kernel on Intel EM64T SYSRET Local DoS
RHSA-2006-0437: Updated kernel packages for Red Hat Enterprise Linux 3 Update 8
RHSA-2006-0493: kernel security update
SA19639: Linux Kernel Program Control Return Denial of Service
SA21745: Avaya Products Linux Kernel Multiple Vulnerabilities
SA21983: Avaya Products Linux Kernel Multiple Vulnerabilities
SUSE-SA:2006:028: various kernel security problems
SUSE-SA:2006:042: kernel local privilege escalation
SUSE-SA:2006:047: kernel security problems
USN-302-1: Linux kernel vulnerabilities
VUPEN/ADV-2006-1390: Linux Kernel Uncanonical Return Addresses Local Denial of Service Vulnerability

Reported:

Apr 12, 2006

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