kernel: Elevation of Privilege in futex
Published Nov 6, 2018
7.8
HIGHCVSS 3.0
EPSS 0.22%
Description
In get_futex_key of futex.c, there is a use-after-free due to improper locking. This could lead to local escalation of privilege with no additional privileges needed. User interaction is not needed for exploitation. Product: Android Versions: Android kernel Android ID: A-74250718 References: Upstream kernel.
Affected products
-
- Version Android kernelStatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Google Inc. | Android | n/a |
|
Configuration 2
- 8.0
- 9.0
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-alt
Not affected
Red Hat Enterprise Linux 7
kernel-rt
Not affected
Red Hat Enterprise Linux 8
kernel
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-alt | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel-rt | Not affected | n/a |
| Red Hat Enterprise Linux 8 | kernel | Not affected | n/a |
| Red Hat Enterprise MRG 2 | realtime-kernel | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
1 other source (Red Hat) ▾
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L
AV:L/AC:L/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
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (8 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.22% (0.00216) | 10.85th | v5 (v2026.06.15) |
| Sep 20, 2026 | 0.22% (0.00216) | 12.29th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.04% (0.00042) | 5.06th | 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) |
| Feb 4, 2022 | 0.95% (0.00950) | 13.46th | v2 (v2022.01.01) |
| Feb 3, 2022 | 0.23% (0.00229) | 1.69th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.23% (0.00229) | 0.00th | v1 |
References (8)
- https://access.redhat.com/security/cve/CVE-2018-9422 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1604217 Issue Tracking
- https://bugzilla.suse.com/show_bug.cgi?id=1102001&_ga=2.244341506.661832603.1561012452-1774095668.1553066022 x_refsource_MISC
- https://lists.debian.org/debian-lts-announce/2018/07/msg00015.html mailing-listx_refsource_MLISTThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/07/msg00016.html mailing-listx_refsource_MLISTThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2018-9422
- https://source.android.com/security/bulletin/2018-07-01 x_refsource_CONFIRMPatchVendor Advisory
- https://www.cve.org/CVERecord?id=CVE-2018-9422
| Link | Providers | Tags |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2018-9422 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1604217 | Issue Tracking | |
| https://bugzilla.suse.com/show_bug.cgi?id=1102001&_ga=2.244341506.661832603.1561012452-1774095668.1553066022 | x_refsource_MISC | |
| https://lists.debian.org/debian-lts-announce/2018/07/msg00015.html | mailing-listx_refsource_MLISTThird Party Advisory | |
| https://lists.debian.org/debian-lts-announce/2018/07/msg00016.html | mailing-listx_refsource_MLISTThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2018-9422 | ||
| https://source.android.com/security/bulletin/2018-07-01 | x_refsource_CONFIRMPatchVendor Advisory | |
| https://www.cve.org/CVERecord?id=CVE-2018-9422 |
Change history (0)
No recorded changes yet.