SB2005022201 - Improper locking in Linux kernel
Published: February 22, 2005
Security Bulletin ID
SB2005022201
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Partial DoS
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper locking (CVE-ID: CVE-2005-0937)
CWE-ID: CWE-667 - Improper Locking
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to perform service disruption.
Some futex functions in futex.c for Linux kernel 2.6.x perform get_user calls while holding the mmap_sem semaphore, which could allow local users to cause a deadlock condition in do_page_fault by triggering get_user faults while another thread is executing mmap or other functions.
Remediation
Install update from vendor's website.
References
- http://lkml.org/lkml/2005/2/22/123
- http://www.redhat.com/support/errata/RHSA-2005-420.html
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10037
- http://www.securityfocus.com/archive/1/427980/100/0/threaded
- http://linux.bkbits.net:8080/linux-2.6/cset%40421cfc11zFsK9gxvSJ2t__FCmuUd3Q