SB2009121301 - NULL pointer dereference in Linux kernel ext4
Published: December 13, 2009
Security Bulletin ID
SB2009121301
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) NULL pointer dereference (CVE-ID: CVE-2009-4308)
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the ext4_decode_error() function in fs/ext4/super.c. A remote non-authenticated attacker 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=78f1ddbb498283c2445c11b0dfa666424c301803
- http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00000.html
- http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00005.html
- http://lists.opensuse.org/opensuse-security-announce/2010-02/msg00005.html
- http://secunia.com/advisories/37658
- http://secunia.com/advisories/38017
- http://secunia.com/advisories/38276
- http://secunia.com/advisories/43315
- http://www.debian.org/security/2010/dsa-2005
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.32
- http://www.mandriva.com/security/advisories?name=MDVSA-2010:198
- http://www.redhat.com/support/errata/RHSA-2010-0147.html
- http://www.securityfocus.com/archive/1/516397/100/0/threaded
- http://www.vmware.com/security/advisories/VMSA-2011-0003.html
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11103