SB2007121801 - Information exposure in Linux kernel
Published: December 18, 2007
Security Bulletin ID
SB2007121801
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) Information exposure (CVE-ID: CVE-2007-6417)
CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor
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.
The shmem_getpage function (mm/shmem.c) in Linux kernel 2.6.11 through 2.6.23 does not properly clear allocated memory in some rare circumstances related to tmpfs, which might allow local users to read sensitive kernel data or cause a denial of service (crash).
Remediation
Install update from vendor's website.
References
- http://lists.opensuse.org/opensuse-security-announce/2008-02/msg00002.html
- http://marc.info/?l=linux-kernel&m=119627664702379&w=2
- http://marc.info/?l=linux-kernel&m=119743651829347&w=2
- http://marc.info/?l=linux-kernel&m=119769771026243&w=2
- http://osvdb.org/44120
- http://secunia.com/advisories/28141
- http://secunia.com/advisories/28706
- http://secunia.com/advisories/28806
- http://secunia.com/advisories/28971
- http://secunia.com/advisories/32023
- http://www.debian.org/security/2007/dsa-1436
- http://www.mandriva.com/security/advisories?name=MDVSA-2008:086
- http://www.mandriva.com/security/advisories?name=MDVSA-2008:112
- http://www.redhat.com/support/errata/RHSA-2008-0885.html
- http://www.securityfocus.com/bid/27694
- http://www.ubuntu.com/usn/usn-574-1
- http://www.ubuntu.com/usn/usn-578-1
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8920