Linux kernel _keyring_search_one() denial of service
| linux-keyringsearchone-dos (25722) |  Low Risk |
Description:
Linux kernel could allow a local attacker to cause a denial of service when adding a new key, caused by a vulnerability in the _keyring_search_one() function. An attacker could send a specially-crafted keyctl request to cause the system to crash.
Platforms Affected:
- Canonical, Ubuntu 5.04
- Canonical, Ubuntu 5.10
- Canonical, Ubuntu 6.06 LTS
- Linux, Kernel 2.6.16.1
- Linux, Kernel 2.6.17 rc1
- Linux, Kernel 2.6.17
- MandrakeSoft, Mandrake Linux 2006
- MandrakeSoft, Mandrake Linux 2006 X86_64
- RedHat, Enterprise Linux 4 WS
- RedHat, Enterprise Linux 4 ES
- RedHat, Enterprise Linux 4 AS
- RedHat, Enterprise Linux 4 Desktop
Remedy:
Upgrade to the latest stable version of Linux kernel (2.6.16.3 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.
Consequences:
Denial of Service
References:
- The Linux Kernel Archives Web site, ChangeLog-2.6.16.3 at http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.16.3.
- 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-17451: Linux Kernel __keyring_search_one Local Denial of Service Vulnerability
- CVE-2006-1522: The sys_add_key function in the keyring code in Linux kernel 2.6.16.1 and 2.6.17-rc1, and possibly earlier versions, allows local users to cause a denial of service (OOPS) via keyctl requests that add a key to a user key instead of a keyring key, which causes an invalid dereference in the __keyring_search_one function.
- MDKSA-2006:086: Updated kernel packages fix multiple vulnerabilities
- OSVDB ID: 24507: Linux Kernel __keyring_search_one() Function Local DoS
- RHSA-2006-0493: kernel security update
- SA19573: Linux Kernel "__keyring_search_one()" Denial of Service
- SA21745: Avaya Products Linux Kernel Multiple Vulnerabilities
- USN-302-1: Linux kernel vulnerabilities
- VUPEN/ADV-2006-1307: Linux Kernel __keyring_search_one() Local Denial of Service Vulnerability
Reported:
Apr 10, 2006
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