SB2010100503 - Race condition in Linux kernel char driver
Published: October 5, 2010
Security Bulletin ID
SB2010100503
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) Race condition (CVE-ID: CVE-2010-2653)
CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
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 vulnerability exists due to a race condition within the hvc_close() function in drivers/char/hvc_console.c. A local user can execute arbitrary code.
Remediation
Install update from vendor's website.
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=320718ee074acce5ffced6506cb51af1388942aa
- http://lkml.org/lkml/2010/3/3/207
- http://patchwork.kernel.org/patch/83353/
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.34
- http://www.openwall.com/lists/oss-security/2010/03/04/3
- http://www.openwall.com/lists/oss-security/2010/04/17/2
- http://www.openwall.com/lists/oss-security/2010/04/18/1
- http://www.openwall.com/lists/oss-security/2010/04/19/1
- http://www.openwall.com/lists/oss-security/2010/04/19/2
- http://www.openwall.com/lists/oss-security/2010/07/01/1
- http://www.openwall.com/lists/oss-security/2010/07/06/7
- http://www.openwall.com/lists/oss-security/2010/07/07/5
- https://bugzilla.redhat.com/show_bug.cgi?id=568621