SB2005093004 - Improper locking in Linux kernel
Published: September 30, 2005
Security Bulletin ID
SB2005093004
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 security vulnerability.
1) Improper locking (CVE-ID: CVE-2005-3107)
The vulnerability allows a local user to perform service disruption.
fs/exec.c in Linux 2.6, when 1 thread is tracing another thread that shares the same memory map, might allow local users to cause a denial of service (deadlock) by forcing a core dump when the traced thread is in the TASK_TRACED state.
Remediation
Install update from vendor's website.
References
- http://linux.bkbits.net:8080/linux-2.6/diffs/fs/exec.c@1.155?nav=index.html|src/|src/fs|hist/fs/exec.c
- http://secunia.com/advisories/17141
- http://secunia.com/advisories/18056
- http://secunia.com/advisories/21136
- http://secunia.com/advisories/21983
- http://support.avaya.com/elmodocs2/security/ASA-2006-180.htm
- http://www.debian.org/security/2005/dsa-922
- http://www.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.11-rc1/2.6.11-rc1-mm1/broken-out/fix-coredump_wait-deadlock-with-ptracer-tracee-on-shared-mm.patch
- http://www.mandriva.com/security/advisories?name=MDKSA-2006:072
- http://www.redhat.com/support/errata/RHSA-2005-420.html
- http://www.redhat.com/support/errata/RHSA-2006-0437.html
- http://www.securityfocus.com/bid/15049
- http://www.ubuntu.com/usn/usn-199-1
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11473