kernel: Possible privilege escalation via groups spanning multiple HW PMUs
Published Oct 10, 2016
7.3
HIGHCVSS 3.1
EPSS 0.21%
Description
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.
Affected products
No data.
Configuration 1
- < 3.16.39
- ≥ 3.18 · < 3.18.54
- ≥ 3.19 · < 4.1
No data.
Red Hat Enterprise Linux 5
kernel
Not affected
Red Hat Enterprise Linux 6
kernel
Not affected
Red Hat Enterprise Linux 7
kernel
Not affected
Red Hat Enterprise Linux 7
kernel-rt
Not affected
Red Hat Enterprise MRG 2
realtime-kernel
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 6 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel-rt | Not affected | n/a |
| Red Hat Enterprise MRG 2 | realtime-kernel | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
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.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
AV:L/AC:M/Au:N/C:C/I:C/A:C
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.21% (0.00207) | 9.72th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.22% (0.00219) | 12.22th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.07% (0.00075) | 20.18th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00042) | 5.07th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00042) | 5.63th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.95% (0.00950) | 32.28th | v2 (v2022.01.01) |
| Sep 10, 2022 | 0.95% (0.00950) | 30.63th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.95% (0.00950) | 28.61th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.95% (0.00950) | 13.46th | v2 (v2022.01.01) |
References (8)
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8fff105e13041e49b82f92eef034f363a6b1c071 x_refsource_CONFIRMIssue TrackingPatch
- http://source.android.com/security/bulletin/2016-10-01.html x_refsource_CONFIRMVendor Advisory
- http://www.securityfocus.com/bid/93314 vdb-entryx_refsource_BIDThird Party AdvisoryVDB EntryURL Repurposed
- https://access.redhat.com/security/cve/CVE-2015-8955 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1383391 Issue Tracking
- https://github.com/torvalds/linux/commit/8fff105e13041e49b82f92eef034f363a6b1c071 x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2015-8955
- https://www.cve.org/CVERecord?id=CVE-2015-8955
| Link | Providers | Tags |
|---|---|---|
| http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8fff105e13041e49b82f92eef034f363a6b1c071 | x_refsource_CONFIRMIssue TrackingPatch | |
| http://source.android.com/security/bulletin/2016-10-01.html | x_refsource_CONFIRMVendor Advisory | |
| http://www.securityfocus.com/bid/93314 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB EntryURL Repurposed | |
| https://access.redhat.com/security/cve/CVE-2015-8955 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1383391 | Issue Tracking | |
| https://github.com/torvalds/linux/commit/8fff105e13041e49b82f92eef034f363a6b1c071 | x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2015-8955 | ||
| https://www.cve.org/CVERecord?id=CVE-2015-8955 |
Change history (0)
No recorded changes yet.