SB2010060303 - NULL pointer dereference in Linux kernel
Published: June 3, 2010
Security Bulletin ID
SB2010060303
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) NULL pointer dereference (CVE-ID: CVE-2010-1643)
CWE-ID: CWE-476 - NULL Pointer Dereference
CVSSv4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a local user to execute arbitrary code.
mm/shmem.c in the Linux kernel before 2.6.28-rc3, when strict overcommit is enabled, does not properly handle the export of shmemfs objects by knfsd, which allows attackers to cause a denial of service (NULL pointer dereference and knfsd crash) or possibly have unspecified other impact via unknown vectors.
Remediation
Install update from vendor's website.
References
- http://vigilance.fr/vulnerability/Linux-kernel-denial-of-service-via-knfsd-9666
- https://bugzilla.redhat.com/show_bug.cgi?id=595970
- http://www.openwall.com/lists/oss-security/2010/05/26/2
- http://www.openwall.com/lists/oss-security/2010/05/26/6
- http://www.kernel.org/pub/linux/kernel/v2.6/testing/v2.6.28/ChangeLog-2.6.28-rc3
- http://www.securityfocus.com/bid/40377
- http://www.vupen.com/english/advisories/2010/1857
- http://secunia.com/advisories/40645
- http://lists.opensuse.org/opensuse-security-announce/2010-07/msg00006.html
- http://www.mandriva.com/security/advisories?name=MDVSA-2010:198
- https://exchange.xforce.ibmcloud.com/vulnerabilities/58957
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=731572d39fcd3498702eda4600db4c43d51e0b26