kernel: l2tp: Race condition between pppol2tp_session_create() and l2tp_eth_create()
Published Dec 7, 2018
6.7
MEDIUMCVSS 3.0
EPSS 0.44%
Description
In pppol2tp_connect, there is possible memory corruption due to a use after free. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation. Product: Android. Versions: Android kernel. Android ID: A-38159931.
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 |
|
No data.
Red Hat Enterprise Linux 7
kernel-0:3.10.0-1062.el7
Fixed · RHSA-2019:2029
Red Hat Enterprise Linux 7
kernel-rt-0:3.10.0-1062.rt56.1022.el7
Fixed · RHSA-2019:2043
Red Hat Enterprise Linux 5
kernel
Not affected
Red Hat Enterprise Linux 6
kernel
Not affected
Red Hat Enterprise Linux 7
kernel-alt
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
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 7 | kernel-0:3.10.0-1062.el7 | Fixed | RHSA-2019:2029 |
| Red Hat Enterprise Linux 7 | kernel-rt-0:3.10.0-1062.rt56.1022.el7 | Fixed | RHSA-2019:2043 |
| 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-alt | 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 | Will not fix | 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:H/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:H
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 | 0.44% (0.00444) | 36.32th | v5 (v2026.06.15) |
| Sep 20, 2026 | 0.44% (0.00444) | 38.04th | 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 | 1.36% (0.01365) | 71.56th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.36% (0.01365) | 45.07th | v2 (v2022.01.01) |
| Feb 3, 2022 | 0.40% (0.00395) | 3.44th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.40% (0.00395) | 0.00th | v1 |
References (9)
- https://access.redhat.com/errata/RHSA-2019:2029 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2019:2043 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2018-9517 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1631045 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2018-9517
- https://source.android.com/security/bulletin/pixel/2018-09-01 x_refsource_CONFIRMPatchVendor Advisory
- https://usn.ubuntu.com/3932-1/ vendor-advisoryx_refsource_UBUNTU
- https://usn.ubuntu.com/3932-2/ vendor-advisoryx_refsource_UBUNTU
- https://www.cve.org/CVERecord?id=CVE-2018-9517
| Link | Providers | Tags |
|---|---|---|
| https://access.redhat.com/errata/RHSA-2019:2029 | vendor-advisoryx_refsource_REDHAT | |
| https://access.redhat.com/errata/RHSA-2019:2043 | vendor-advisoryx_refsource_REDHAT | |
| https://access.redhat.com/security/cve/CVE-2018-9517 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1631045 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2018-9517 | ||
| https://source.android.com/security/bulletin/pixel/2018-09-01 | x_refsource_CONFIRMPatchVendor Advisory | |
| https://usn.ubuntu.com/3932-1/ | vendor-advisoryx_refsource_UBUNTU | |
| https://usn.ubuntu.com/3932-2/ | vendor-advisoryx_refsource_UBUNTU | |
| https://www.cve.org/CVERecord?id=CVE-2018-9517 |
Change history (0)
No recorded changes yet.