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.
Consequences:
Denial of Service
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.
References:
- The Linux Kernel Archives Web site: ChangeLog-2.6.16.5.
- The The Linux Kernel Archives Web site: The Linux Kernel Archives.
- 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
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 test9
- Linux Kernel 2.6.0 test9-cvs
- Linux Kernel 2.6.0 test8
- Linux Kernel 2.6.0 test7
- Linux Kernel 2.6.0 test6
- Linux Kernel 2.6.0 test5
- Linux Kernel 2.6.0
- Linux Kernel 2.6.0 test3
- Linux Kernel 2.6.0 test2
- Linux Kernel 2.6.0 test11
- Linux Kernel 2.6.0 test10
- Linux Kernel 2.6.0 test1
- Linux Kernel 2.6.0 test4
- Linux Kernel 2.6.1 rc2
- Linux Kernel 2.6.1 rc3
- Linux Kernel 2.6.1 rc1
- Linux Kernel 2.6.1
- Linux Kernel 2.6.10 rc3
- Linux Kernel 2.6.10
- Linux Kernel 2.6.10 rc2
- Linux Kernel 2.6.10 rc1
- Linux Kernel 2.6.11 rc3
- Linux Kernel 2.6.11 rc4
- Linux Kernel 2.6.11 rc2
- Linux Kernel 2.6.11 rc5
- Linux Kernel 2.6.11 rc1
- 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 rc5
- Linux Kernel 2.6.12 rc4
- Linux Kernel 2.6.12 rc3
- Linux Kernel 2.6.12 rc2
- 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 rc4
- Linux Kernel 2.6.13 rc5
- Linux Kernel 2.6.13 rc6
- Linux Kernel 2.6.13 rc7
- Linux Kernel 2.6.13 rc3
- Linux Kernel 2.6.13
- Linux Kernel 2.6.13 rc1
- Linux Kernel 2.6.13 rc2
- 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 rc4
- Linux Kernel 2.6.14 rc3
- Linux Kernel 2.6.14 rc1
- 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 rc2
- Linux Kernel 2.6.15 rc1
- Linux Kernel 2.6.15 rc3
- Linux Kernel 2.6.15 rc7
- Linux Kernel 2.6.15 rc6
- Linux Kernel 2.6.15 rc5
- Linux Kernel 2.6.15 rc4
- 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 rc4
- Linux Kernel 2.6.16 rc5
- Linux Kernel 2.6.16 rc6
- Linux Kernel 2.6.16 rc3
- Linux Kernel 2.6.16 rc7
- Linux Kernel 2.6.16
- 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 rc2
- Linux Kernel 2.6.2 rc3
- Linux Kernel 2.6.2 rc1
- Linux Kernel 2.6.2
- Linux Kernel 2.6.3 rc4
- Linux Kernel 2.6.3 rc1
- Linux Kernel 2.6.3 rc3
- Linux Kernel 2.6.3
- Linux Kernel 2.6.3 rc2
- Linux Kernel 2.6.4
- Linux Kernel 2.6.4 rc2
- Linux Kernel 2.6.4 rc3
- Linux Kernel 2.6.4 rc1
- Linux Kernel 2.6.5 rc1
- Linux Kernel 2.6.5
- Linux Kernel 2.6.5 rc2
- Linux Kernel 2.6.5 rc3
- Linux Kernel 2.6.6 rc2
- Linux Kernel 2.6.6 rc3
- Linux Kernel 2.6.6
- Linux Kernel 2.6.6 rc1
- Linux Kernel 2.6.7 rc3
- Linux Kernel 2.6.7
- Linux Kernel 2.6.7 rc2
- Linux Kernel 2.6.7 rc1
- Linux Kernel 2.6.8 rc4
- Linux Kernel 2.6.8 rc3
- Linux Kernel 2.6.8 rc1
- Linux Kernel 2.6.8 rc2
- Linux Kernel 2.6.8
- Linux Kernel 2.6.9 rc2
- Linux Kernel 2.6.9 rc1
- Linux Kernel 2.6.9 final
- Linux Kernel 2.6.9
- Linux Kernel 2.6.9 rc4
- Linux Kernel 2.6.9 rc3
- MandrakeSoft Mandrake Linux 2006 X86_64
- MandrakeSoft Mandrake Linux 2006
- 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 Desktop
- RedHat Enterprise Linux 3 WS
- RedHat Enterprise Linux 3 ES
- RedHat Enterprise Linux 3 AS
- RedHat Enterprise Linux 4 Desktop
- RedHat Enterprise Linux 4 WS
- RedHat Enterprise Linux 4 ES
- RedHat Enterprise Linux 4 AS
- SuSE Linux Enterprise Server 8
- SuSE Linux Enterprise Server 9
- 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 SLES 9
Reported:
Apr 12, 2006
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