Linux kernel O_Direct denial of service
| kernel-odirect-dos (25000) |  Low Risk |
Description:
Linux kernel is vulnerable to a denial of service attack, caused by an unspecified vulnerability related to the use of O_Direct. A local attacker could exploit this vulnerability to cause an NFS client panic, resulting in a denial of service.
Platforms Affected:
- Canonical, Ubuntu 4.10
- Canonical, Ubuntu 5.04
- Canonical, Ubuntu 5.10
- Debian, Debian Linux 3.1
- Linux, Kernel 2.6.0 test4
- Linux, Kernel 2.6.0
- Linux, Kernel 2.6.0 test9
- Linux, Kernel 2.6.0 test8
- 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 test5
- Linux, Kernel 2.6.0 test6
- Linux, Kernel 2.6.0 test7
- Linux, Kernel 2.6.1 rc1
- Linux, Kernel 2.6.1
- Linux, Kernel 2.6.1 rc2
- Linux, Kernel 2.6.1 rc3
- Linux, Kernel 2.6.10 rc2
- Linux, Kernel 2.6.10 rc3
- Linux, Kernel 2.6.10 rc1
- Linux, Kernel 2.6.10
- Linux, Kernel 2.6.11 rc5
- Linux, Kernel 2.6.11 rc1
- Linux, Kernel 2.6.11
- Linux, Kernel 2.6.11 rc4
- Linux, Kernel 2.6.11 rc3
- Linux, Kernel 2.6.11 rc2
- 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 rc3
- Linux, Kernel 2.6.12 rc2
- Linux, Kernel 2.6.12 rc1
- Linux, Kernel 2.6.12
- Linux, Kernel 2.6.12 rc6
- Linux, Kernel 2.6.12 rc5
- Linux, Kernel 2.6.12 rc4
- Linux, Kernel 2.6.12.1
- Linux, Kernel 2.6.12.12
- Linux, Kernel 2.6.12.2
- Linux, Kernel 2.6.12.22
- 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 rc6
- Linux, Kernel 2.6.13 rc1
- Linux, Kernel 2.6.13 rc2
- Linux, Kernel 2.6.13 rc3
- Linux, Kernel 2.6.13
- Linux, Kernel 2.6.13 rc4
- Linux, Kernel 2.6.13 rc5
- Linux, Kernel 2.6.13 rc7
- 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 2.6.13.5
- Linux, Kernel 2.6.14 rc1
- Linux, Kernel 2.6.14
- Linux, Kernel 2.6.14 rc3
- Linux, Kernel 2.6.14 rc4
- Linux, Kernel 2.6.14 rc5
- Linux, Kernel 2.6.14 rc2
- 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 rc7
- Linux, Kernel 2.6.15 rc6
- Linux, Kernel 2.6.15 rc2
- Linux, Kernel 2.6.15 rc4
- Linux, Kernel 2.6.15 rc5
- Linux, Kernel 2.6.15 rc3
- Linux, Kernel 2.6.15 rc1
- Linux, Kernel 2.6.15
- 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 2.6.2 rc1
- Linux, Kernel 2.6.2
- Linux, Kernel 2.6.2 rc3
- Linux, Kernel 2.6.2 rc2
- 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 2.6.3 rc1
- Linux, Kernel 2.6.4
- Linux, Kernel 2.6.4 rc1
- Linux, Kernel 2.6.4 rc2
- Linux, Kernel 2.6.4 rc3
- Linux, Kernel 2.6.5
- Linux, Kernel 2.6.5 rc2
- Linux, Kernel 2.6.5 rc1
- Linux, Kernel 2.6.5 rc3
- Linux, Kernel 2.6.6 rc3
- Linux, Kernel 2.6.6 rc1
- Linux, Kernel 2.6.6
- Linux, Kernel 2.6.6 rc2
- Linux, Kernel 2.6.7 rc1
- Linux, Kernel 2.6.7 rc2
- Linux, Kernel 2.6.7 rc3
- Linux, Kernel 2.6.7
- Linux, Kernel 2.6.8
- Linux, Kernel 2.6.8 rc3
- Linux, Kernel 2.6.8 rc2
- Linux, Kernel 2.6.8 rc4
- Linux, Kernel 2.6.8 rc1
- Linux, Kernel 2.6.8.1
- 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 X86_64
- MandrakeSoft, Mandrake Linux 2006
- Novell, UnitedLinux 1.0
- 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 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 (2.6.15.5 or later), available from The Linux Kernel Archives. See References.
For Red Hat Linux:
Refer to RHSA-2006:0493-6 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 Ubuntu Linux:
Refer to USN-263-1 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 other distributions:
Contact your vendor for upgrade or patch information.
Consequences:
Denial of Service
References:
- ChangeLog-2.6.15.5, ChangeLog-2.6.15.5 at http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.15.5.
- 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)
- BID-16922: Linux Kernel NFS Client Denial of Service Vulnerability
- CVE-2006-0555: The Linux Kernel before 2.6.15.5 allows local users to cause a denial of service (NFS client panic) via unknown attack vectors related to the use of O_DIRECT (direct I/O).
- DSA-1103: kernel-source-2.6.8 -- several vulnerabilities
- MDKSA-2006:059: Updated kernel packages fix multiple vulnerabilities
- RHSA-2006-0493: kernel security update
- SA19083: Linux Kernel Local Denial of Service and Information Disclosure
- SA21745: Avaya Products Linux Kernel Multiple Vulnerabilities
- SUSE-SA:2006:028: various kernel security problems
- USN-263-1: Linux kernel vulnerabilities
- VUPEN/ADV-2006-0804: Linux Kernel Denial of Service and Information Disclosure Vulnerabilities
Reported:
Mar 01, 2006
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