Race condition in Linux kernel



Published: 2020-01-31 | Updated: 2020-06-01
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2019-3016
CWE-ID CWE-362
Exploitation vector Local
Public exploit N/A
Vulnerable software
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Linux kernel
Operating systems & Components / Operating system

Vendor Linux Foundation

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Race condition

EUVDB-ID: #VU28411

Risk: Low

CVSSv3.1:

CVE-ID: CVE-2019-3016

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Exploit availability: No

Description

The vulnerability allows a local authenticated user to gain access to sensitive information.

In a Linux KVM guest that has PV TLB enabled, a process in the guest kernel may be able to read memory locations from another process in the same guest. This problem is limit to the host running linux kernel 4.10 with a guest running linux kernel 4.16 or later. The problem mainly affects AMD processors but Intel CPUs cannot be ruled out.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: 4.19 - 5.5.19


CPE2.3 External links

http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.103
http://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.19
http://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.5.3
http://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.119

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?



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