kernel: race condition in mnh driver due to insufficient locking leads to use-after-free and subsequently privilege escalation
Published Sep 6, 2019
6.4
MEDIUMCVSS 3.1
EPSS 0.13%
Description
In the Android kernel in the mnh driver there is a race condition due to insufficient locking. This could lead to a use-after-free which could lead to escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.
Affected products
- Vendor n/a Product Android Defaultn/a
- 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 | ||||||
|---|---|---|---|---|---|---|---|---|---|
| n/a | Android | n/a |
|
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 Linux 8
kernel-rt
Not affected
Red Hat Enterprise MRG 2
kernel-rt
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 Linux 8 | kernel-rt | Not affected | n/a |
| Red Hat Enterprise MRG 2 | kernel-rt | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
AV:L/AC:M/Au:N/C:P/I:P/A:P
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 (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.13% (0.00131) | 2.25th | v5 (v2026.06.15) |
| Sep 20, 2026 | 0.13% (0.00131) | 3.07th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.04% (0.00044) | 12.95th | v3 (v2023.03.01) |
| May 25, 2024 | 0.04% (0.00044) | 12.27th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00044) | 10.26th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.04% (0.01036) | 43.31th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.04% (0.01036) | 39.16th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.76% (0.02763) | 63.78th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.34% (0.01340) | 31.40th | v1 |
| Jan 6, 2022 | 1.34% (0.01340) | 30.75th | v1 |
| Jan 5, 2022 | 0.30% (0.00302) | 6.21th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.30% (0.00302) | 0.00th | v1 |
References (5)
- https://access.redhat.com/security/cve/CVE-2019-9271 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1819358 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2019-9271
- https://source.android.com/security/bulletin/pixel/2019-09-01 x_refsource_MISCVendor Advisory
- https://www.cve.org/CVERecord?id=CVE-2019-9271
| Link | Providers | Tags |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2019-9271 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1819358 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2019-9271 | ||
| https://source.android.com/security/bulletin/pixel/2019-09-01 | x_refsource_MISCVendor Advisory | |
| https://www.cve.org/CVERecord?id=CVE-2019-9271 |
Change history (0)
No recorded changes yet.