arch/arm64/kernel/perf_event.c in the Linux kernel before 4.1 on arm64 platforms allows local users to gain privileges or cause a denial of service (invalid pointer dereference) via vectors involving events that are mishandled during a span of multiple HW PMUs.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2015-8955 from the MITRE CVE dictionary dictionary and NIST NVD.
This issue does not affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 5. 6, 7 and Red Hat Enterprise MRG-2 as the code with the flaw is not present in the products listed.
NOTE: The following CVSS v2 metrics and score provided are preliminary and subject to review.
Base Score | 6.9 |
---|---|
Base Metrics | AV:L/AC:M/Au:N/C:C/I:C/A:C |
Access Vector | Local |
Access Complexity | Medium |
Authentication | None |
Confidentiality Impact | Complete |
Integrity Impact | Complete |
Availability Impact | Complete |
NOTE: The following CVSS v3 metrics and score provided are preliminary and subject to review.
CVSS3 Base Score | 7.3 |
---|---|
CVSS3 Base Metrics | CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H |
Attack Vector | Local |
Attack Complexity | Low |
Privileges Required | Low |
User Interaction | Required |
Scope | Unchanged |
Confidentiality | High |
Integrity Impact | High |
Availability Impact | High |
Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).
Platform | Package | State |
---|---|---|
Red Hat Enterprise MRG 2 | realtime-kernel | Not affected |
Red Hat Enterprise Linux 7 | kernel-rt | Not affected |
Red Hat Enterprise Linux 7 | kernel | Not affected |
Red Hat Enterprise Linux 6 | kernel | Not affected |
Red Hat Enterprise Linux 5 | kernel | Not affected |