SB2014111009 - Race condition in Linux kernel
Published: November 10, 2014 Updated: August 10, 2020
Security Bulletin ID
SB2014111009
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Race condition (CVE-ID: CVE-2014-3611)
CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
Race condition in the __kvm_migrate_pit_timer function in arch/x86/kvm/i8254.c in the KVM subsystem in the Linux kernel through 3.17.2 allows guest OS users to cause a denial of service (host OS crash) by leveraging incorrect PIT emulation.
Remediation
Install update from vendor's website.
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=2febc839133280d5a5e8e1179c94ea674489dae2
- http://rhn.redhat.com/errata/RHSA-2015-0126.html
- http://rhn.redhat.com/errata/RHSA-2015-0284.html
- http://rhn.redhat.com/errata/RHSA-2015-0869.html
- http://www.debian.org/security/2014/dsa-3060
- http://www.openwall.com/lists/oss-security/2014/10/24/9
- http://www.ubuntu.com/usn/USN-2394-1
- http://www.ubuntu.com/usn/USN-2417-1
- http://www.ubuntu.com/usn/USN-2418-1
- http://www.ubuntu.com/usn/USN-2491-1
- https://bugzilla.redhat.com/show_bug.cgi?id=1144878
- https://github.com/torvalds/linux/commit/2febc839133280d5a5e8e1179c94ea674489dae2