SB2008090404 - Input validation error in Linux kernel fs
Published: September 4, 2008
Security Bulletin ID
SB2008090404
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Input validation error (CVE-ID: CVE-2007-6716)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper input validation within the direct_io_worker() and __blockdev_direct_IO() functions in fs/direct-io.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=848c4dd5153c7a0de55470ce99a8e13a63b4703f
- http://lists.opensuse.org/opensuse-security-announce/2008-10/msg00000.html
- http://lists.opensuse.org/opensuse-security-announce/2008-10/msg00007.html
- http://lists.opensuse.org/opensuse-security-announce/2008-10/msg00008.html
- http://lists.opensuse.org/opensuse-security-announce/2008-11/msg00001.html
- http://lists.opensuse.org/opensuse-security-announce/2008-12/msg00000.html
- http://lkml.org/lkml/2007/7/30/448
- http://rhn.redhat.com/errata/RHSA-2008-0972.html
- http://secunia.com/advisories/32023
- http://secunia.com/advisories/32103
- http://secunia.com/advisories/32237
- http://secunia.com/advisories/32356
- http://secunia.com/advisories/32370
- http://secunia.com/advisories/32393
- http://secunia.com/advisories/32759
- http://secunia.com/advisories/32799
- http://www.debian.org/security/2008/dsa-1653
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.23
- http://www.mandriva.com/security/advisories?name=MDVSA-2008:220
- http://www.openwall.com/lists/oss-security/2008/09/04/1
- http://www.redhat.com/support/errata/RHSA-2008-0885.html
- http://www.securityfocus.com/bid/31515
- http://www.ubuntu.com/usn/usn-659-1
- https://bugzilla.redhat.com/show_bug.cgi?id=461082
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10053