Linux kernel subthread exec signal denial of service
| kernel-subthread-dos (21138) |  Low Risk |
Description:
Linux kernel is vulnerable to a denial of service attack caused by a vulnerability in the subthread exec signal processing. A local attacker could use this vulnerability to cause a kernel panic, resulting in a denial of service.
Platforms Affected:
- Canonical, Ubuntu 4.10
- Canonical, Ubuntu 5.04
- Linux, Kernel 2.6.0 test6
- Linux, Kernel 2.6.0 test5
- Linux, Kernel 2.6.0 test4
- 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
- Linux, Kernel 2.6.0 test7
- Linux, Kernel 2.6.0 test9
- Linux, Kernel 2.6.0 test8
- Linux, Kernel 2.6.1 rc1
- Linux, Kernel 2.6.1 rc2
- Linux, Kernel 2.6.1
- Linux, Kernel 2.6.1 rc3
- Linux, Kernel 2.6.10 rc2
- Linux, Kernel 2.6.10
- Linux, Kernel 2.6.10 rc1
- Linux, Kernel 2.6.10 rc3
- Linux, Kernel 2.6.11 rc2
- Linux, Kernel 2.6.11 rc4
- Linux, Kernel 2.6.11 rc1
- Linux, Kernel 2.6.11 rc5
- Linux, Kernel 2.6.11
- Linux, Kernel 2.6.11 rc3
- 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 rc1
- Linux, Kernel 2.6.12 rc2
- Linux, Kernel 2.6.12 rc6
- Linux, Kernel 2.6.12 rc4
- Linux, Kernel 2.6.12
- Linux, Kernel 2.6.12 rc5
- Linux, Kernel 2.6.12 rc3
- Linux, Kernel 2.6.2 rc1
- Linux, Kernel 2.6.2
- Linux, Kernel 2.6.2 rc2
- Linux, Kernel 2.6.2 rc3
- Linux, Kernel 2.6.3
- Linux, Kernel 2.6.3 rc1
- Linux, Kernel 2.6.3 rc2
- Linux, Kernel 2.6.3 rc3
- Linux, Kernel 2.6.3 rc4
- Linux, Kernel 2.6.4 rc3
- Linux, Kernel 2.6.4 rc1
- Linux, Kernel 2.6.4 rc2
- Linux, Kernel 2.6.4
- 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
- Linux, Kernel 2.6.6 rc1
- Linux, Kernel 2.6.6 rc3
- Linux, Kernel 2.6.6 rc2
- Linux, Kernel 2.6.7 rc2
- Linux, Kernel 2.6.7 rc1
- Linux, Kernel 2.6.7 rc3
- Linux, Kernel 2.6.7
- Linux, Kernel 2.6.8 rc1
- Linux, Kernel 2.6.8
- Linux, Kernel 2.6.8 rc2
- Linux, Kernel 2.6.8 rc3
- Linux, Kernel 2.6.8 rc4
- 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
Remedy:
Upgrade to the latest version of Linux Kernel (2.6.12.1 or later), avaialble from The Linux Kernel Archives Web page. See References.
For Ubuntu Linux:
Refer to USN-178-1 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 The Linux Kernel Archives Web site, The Linux Kernel Archives at http://www.kernel.org/.
- BID-14054: Linux Kernel Subthread Exec Local Denial Of Service Vulnerability
- CVE-2005-1913: The Linux kernel 2.6 before 2.6.12.1 allows local users to cause a denial of service (kernel panic) via a non group-leader thread executing a different program than was pending in itimer, which causes the signal to be delivered to the old group-leader task, which does not exist.
- SA15786: Linux Kernel Multiple Vulnerabilities
- USN-178-1: Linux kernel vulnerabilities
Reported:
Jun 23, 2005
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