Red Hat update for kernel



Published: 2018-05-30
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2018-3639
CWE-ID CWE-362
Exploitation vector Local
Public exploit N/A
Vulnerable software
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Red Hat Enterprise Linux for Power, big endian - Extended Update Support
Operating systems & Components / Operating system

Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Operating systems & Components / Operating system

Red Hat Enterprise Linux Server - Extended Update Support
Operating systems & Components / Operating system

Red Hat Enterprise Linux EUS Compute Node
Operating systems & Components / Operating system

kernel (Red Hat package)
Operating systems & Components / Operating system package or component

Vendor Red Hat Inc.

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Speculative Store Bypass

EUVDB-ID: #VU12911

Risk: Low

CVSSv3.1:

CVE-ID: CVE-2018-3639

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

Exploit availability: No

Description

The vulnerability allows a local attacker to obtain potentially sensitive information on the target system.

The weakness exists due to race conditions in CPU cache processing. A local attacker can conduct a side-channel attack to exploit a flaw in the speculative execution of Load and Store instructions to read privileged memory.

Note: the vulnerability is referred to as "Spectre variant 4".

Mitigation

Install update from vendor's website.

Vulnerable software versions

Red Hat Enterprise Linux for Power, big endian - Extended Update Support: 6.7

Red Hat Enterprise Linux for IBM z Systems - Extended Update Support: 6.7

Red Hat Enterprise Linux Server - Extended Update Support: 6.7

kernel (Red Hat package): 2.6.32-71.7.1.el6 - 2.6.32-573.55.2.el6

Red Hat Enterprise Linux EUS Compute Node: 6.7

:


CPE2.3 External links

http://access.redhat.com/errata/RHSA-2018:1638

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?



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