kernel: l2tp: Race condition in the L2TPv3 IP encapsulation feature
Published Mar 7, 2017
7.0
HIGHCVSS 3.1
EPSS 0.30%
Description
Race condition in the L2TPv3 IP Encapsulation feature in the Linux kernel before 4.8.14 allows local users to gain privileges or cause a denial of service (use-after-free) by making multiple bind system calls without properly ascertaining whether a socket has the SOCK_ZAPPED status, related to net/l2tp/l2tp_ip.c and net/l2tp/l2tp_ip6.c.
Affected products
No data.
Configuration 1
- ≥ 3.0.34 · < 3.2
- ≥ 3.2.20 · < 3.2.88
- ≥ 3.4.2 · < 3.12.69
- ≥ 3.13 · < 3.16.40
- ≥ 3.17 · < 3.18.52
- ≥ 3.19 · < 4.4.38
- ≥ 4.5 · < 4.8.14
No data.
Red Hat Enterprise Linux 7
kernel-0:3.10.0-693.el7
Fixed · RHSA-2017:1842
Red Hat Enterprise Linux 7
kernel-rt-0:3.10.0-693.rt56.617.el7
Fixed · RHSA-2017:2077
Red Hat Enterprise Linux 7.3 Extended Update Support
kernel-0:3.10.0-514.28.1.el7
Fixed · RHSA-2017:2437
Red Hat Enterprise MRG 2
kernel-rt-1:3.10.0-514.rt56.231.el6rt
Fixed · RHSA-2017:2444
Red Hat Enterprise Linux 5
kernel
Not affected
Red Hat Enterprise Linux 6
kernel
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 7 | kernel-0:3.10.0-693.el7 | Fixed | RHSA-2017:1842 |
| Red Hat Enterprise Linux 7 | kernel-rt-0:3.10.0-693.rt56.617.el7 | Fixed | RHSA-2017:2077 |
| Red Hat Enterprise Linux 7.3 Extended Update Support | kernel-0:3.10.0-514.28.1.el7 | Fixed | RHSA-2017:2437 |
| Red Hat Enterprise MRG 2 | kernel-rt-1:3.10.0-514.rt56.231.el6rt | Fixed | RHSA-2017:2444 |
| Red Hat Enterprise Linux 5 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 6 | 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 and 6 as the code with the flaw is not present in the products listed. This issue affects the Linux kernel packages as shipped with Red Hat Enterprise Linux 7 and MRG-2. Future Linux kernel updates for the respective releases may address this issue.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/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 | 0.30% (0.00296) | 20.11th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.29% (0.00295) | 20.93th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.03% (0.00029) | 5.08th | 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 | 1.28% (0.01282) | 68.34th | v2 (v2022.01.01) |
| Feb 22, 2023 | 1.28% (0.01282) | 68.05th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.28% (0.01282) | 65.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.28% (0.01282) | 41.72th | v2 (v2022.01.01) |
References (15)
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=32c231164b762dddefa13af5a0101032c70b50ef x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
- http://source.android.com/security/bulletin/2017-03-01.html x_refsource_CONFIRMThird Party Advisory
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.14 x_refsource_CONFIRMRelease NotesVendor Advisory
- http://www.securityfocus.com/bid/101783 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1037965 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1037968 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2017:1842 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/errata/RHSA-2017:2077 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/errata/RHSA-2017:2437 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/errata/RHSA-2017:2444 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2016-10200 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1430347 Issue Tracking
- https://github.com/torvalds/linux/commit/32c231164b762dddefa13af5a0101032c70b50ef x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2016-10200
- https://www.cve.org/CVERecord?id=CVE-2016-10200
Change history (0)
No recorded changes yet.