Ubuntu update for Linux kernel (Trusty HWE)



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2015-5307
CWE-ID CWE-703
Exploitation vector Local network
Public exploit N/A
Vulnerable software
 Ubuntu
Operating systems & Components / Operating system

Vendor Canonical Ltd.

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Improper check or handling of exceptional conditions

EUVDB-ID: #VU3355

Risk: Low

CVSSv4.0: 4.9 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2015-5307

CWE-ID: CWE-703 - Improper Check or Handling of Exceptional Conditions

Exploit availability: No

Description

The vulnerability allows an adjacent attacker to cause DoS condition on the target system.

The weakness exists in the KVM subsystem due to many #AC (aka Alignment Check) exceptions, related to svm.c and vmx.c. An adjacent attacker can cause the service to crash.

Mitigation

Update the affected packages

Ubuntu 12.04 LTS:
linux-image-3.13.0-68-generic 3.13.0-68.111~precise1
linux-image-3.13.0-68-generic-lpae 3.13.0-68.111~precise1

Vulnerable software versions

Ubuntu: 12.04

CPE2.3 External links

https://www.ubuntu.com/usn/usn-2804-1/


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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