CVE-2018-15572

Impact:
Moderate
Public Date:
2018-07-20
CWE:
CWE-200
Bugzilla:
1616245: CVE-2018-15572 Kernel: hw: cpu: userspace-userspace spectreRSB attack

The MITRE CVE dictionary describes this issue as:

The spectre_v2_select_mitigation function in arch/x86/kernel/cpu/bugs.c in the Linux kernel before 4.18.1 does not always fill RSB upon a context switch, which makes it easier for attackers to conduct userspace-userspace spectreRSB attacks.

Find out more about CVE-2018-15572 from the MITRE CVE dictionary dictionary and NIST NVD.

Statement

This issue affects the version of the kernel package as shipped with Red Hat Enterprise Linux 5.

This issue does not affect the versions of the kernel package as shipped with
Red Hat Enterprise Linux 6, 7 and Red Hat Enterprise MRG 2.

Red Hat Enterprise Linux 5 is now in Production 3 Phase of the support and
maintenance life cycle. This has been rated as having Moderate security
impact and is not currently planned to be addressed in future updates. For
additional information, refer to the Red Hat Enterprise Linux Life
Cycle: https://access.redhat.com/support/policy/updates/errata/.

CVSS v3 metrics

NOTE: The following CVSS v3 metrics and score provided are preliminary and subject to review.

CVSS3 Base Score 5.6
CVSS3 Base Metrics CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
Attack Vector Local
Attack Complexity High
Privileges Required Low
User Interaction None
Scope Changed
Confidentiality High
Integrity Impact None
Availability Impact None

Affected Packages State

Platform Package State
Red Hat Enterprise MRG 2 kernel-rt Not affected
Red Hat Enterprise Linux 7 kernel-alt Not affected
Red Hat Enterprise Linux 7 kernel Not affected
Red Hat Enterprise Linux 7 kernel-rt Not affected
Red Hat Enterprise Linux 6 kernel Not affected
Red Hat Enterprise Linux 5 kernel Affected

Acknowledgements

Red Hat would like to thank Giorgi Maisuradze (Saarland University), Christian Rossow (Saarland University), Nael Abu-Ghazaleh (University of California), Esmaiel Mohammadian Koruyeh (University of California), Khaled Khasawneh (University of California), and Chengyu Song (University of California) for reporting this issue.

Last Modified

CVE description copyright © 2017, The MITRE Corporation

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