The do_change_type function in fs/namespace.c in the Linux kernel before 2.6.22 does not verify that the caller has the CAP_SYS_ADMIN capability, which allows local users to gain privileges or cause a denial of service by modifying the properties of a mountpoint.
http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.22
http://lists.opensuse.org/opensuse-security-announce/2008-07/msg00007.html
http://lists.opensuse.org/opensuse-security-announce/2008-07/msg00012.html
http://lists.opensuse.org/opensuse-security-announce/2008-10/msg00003.html
http://lists.opensuse.org/opensuse-security-announce/2008-11/msg00001.html
http://secunia.com/advisories/30982
http://secunia.com/advisories/31551
http://secunia.com/advisories/31614
http://secunia.com/advisories/32023
http://secunia.com/advisories/32759
http://www.debian.org/security/2008/dsa-1630
http://www.openwall.com/lists/oss-security/2008/07/08/3
http://www.openwall.com/lists/oss-security/2008/07/08/4
http://www.redhat.com/support/errata/RHSA-2008-0885.html
http://www.securityfocus.com/bid/30126
https://bugzilla.redhat.com/show_bug.cgi?id=454388
https://exchange.xforce.ibmcloud.com/vulnerabilities/43696
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10437
Source: MITRE
Published: 2008-07-09
Updated: 2020-08-06
Type: CWE-269
Base Score: 7.2
Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C
Impact Score: 10
Exploitability Score: 3.9
Severity: HIGH
Base Score: 7.8
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Impact Score: 5.9
Exploitability Score: 1.8
Severity: HIGH