kernel: buffer-overflow hardening in WiFi beacon validation code.
Published Sep 24, 2019
9.8
CRITICALCVSS 3.1
EPSS 12.65%
Description
An issue was discovered in net/wireless/nl80211.c in the Linux kernel through 5.2.17. It does not check the length of variable elements in a beacon head, leading to a buffer overflow.
Affected products
No data.
Configuration 1
- ≥ 2.6.25 · < 3.16.79
- ≥ 3.17 · < 4.4.197
- ≥ 4.5 · < 4.9.197
- ≥ 4.10 · < 4.14.149
- ≥ 4.15 · < 4.19.79
- ≥ 4.20 · < 5.3.6
Configuration 2
- 8.0
Configuration 3
- 16.04
- 18.04
- 19.04
- 19.10
Configuration 4
- 30
- 15.1
No data.
Red Hat Enterprise Linux 7
kernel-0:3.10.0-1127.el7
Fixed · RHSA-2020:1016
Red Hat Enterprise Linux 7
kernel-rt-0:3.10.0-1127.rt56.1093.el7
Fixed · RHSA-2020:1070
Red Hat Enterprise Linux 8
kernel-0:4.18.0-193.el8
Fixed · RHSA-2020:1769
Red Hat Enterprise Linux 5
kernel
Not affected
Red Hat Enterprise Linux 6
kernel
Will not fix
Red Hat Enterprise Linux 7
kernel-alt
Will not fix
Red Hat Enterprise Linux 8
kernel-rt
Affected
Red Hat Enterprise MRG 2
kernel
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 7 | kernel-0:3.10.0-1127.el7 | Fixed | RHSA-2020:1016 |
| Red Hat Enterprise Linux 7 | kernel-rt-0:3.10.0-1127.rt56.1093.el7 | Fixed | RHSA-2020:1070 |
| Red Hat Enterprise Linux 8 | kernel-0:4.18.0-193.el8 | Fixed | RHSA-2020:1769 |
| Red Hat Enterprise Linux 5 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 6 | kernel | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | kernel-alt | Will not fix | n/a |
| Red Hat Enterprise Linux 8 | kernel-rt | Affected | n/a |
| Red Hat Enterprise MRG 2 | kernel | 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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
1 other source (Red Hat) ▾
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
AV:N/AC:L/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 3, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Table of values (27 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 12.65% (0.12651) | 96.14th | v5 (v2026.06.15) |
| Jun 15, 2026 | 12.65% (0.12651) | 95.73th | v5 (v2026.06.15) |
| Nov 21, 2025 | 2.60% (0.02601) | 85.11th | v4 (v2025.03.14) |
| Nov 18, 2025 | 5.42% (0.05420) | 89.16th | v4 (v2025.03.14) |
| Sep 3, 2025 | 2.33% (0.02332) | 84.32th | v4 (v2025.03.14) |
| Aug 30, 2025 | 1.11% (0.01109) | 77.25th | v4 (v2025.03.14) |
| Mar 30, 2025 | 3.18% (0.03184) | 85.81th | v4 (v2025.03.14) |
| Mar 29, 2025 | 13.55% (0.13553) | 90.36th | v4 (v2025.03.14) |
| Mar 28, 2025 | 3.18% (0.03184) | 85.82th | v4 (v2025.03.14) |
| Mar 27, 2025 | 13.55% (0.13553) | 93.25th | v4 (v2025.03.14) |
| Mar 20, 2025 | 8.61% (0.08614) | 91.71th | v4 (v2025.03.14) |
| Mar 19, 2025 | 13.55% (0.13553) | 93.39th | v4 (v2025.03.14) |
| Mar 17, 2025 | 8.61% (0.08614) | 91.79th | v4 (v2025.03.14) |
| Dec 17, 2024 | 2.48% (0.02479) | 89.75th | v3 (v2023.03.01) |
| Dec 12, 2024 | 1.16% (0.01163) | 85.55th | v3 (v2023.03.01) |
| Jul 13, 2024 | 0.85% (0.00855) | 82.42th | v3 (v2023.03.01) |
| Nov 3, 2023 | 0.85% (0.00855) | 80.41th | v3 (v2023.03.01) |
| Sep 3, 2023 | 0.63% (0.00634) | 76.45th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.79% (0.00794) | 78.91th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.69% (0.02686) | 82.85th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.69% (0.02686) | 81.17th | v2 (v2022.01.01) |
| Feb 4, 2022 | 24.56% (0.24563) | 95.26th | v2 (v2022.01.01) |
| Feb 3, 2022 | 12.48% (0.12481) | 88.86th | v5 (v2026.06.15) |
| Jan 6, 2022 | 12.48% (0.12481) | 88.73th | v1 |
| Sep 1, 2021 | 3.08% (0.03080) | 81.27th | v1 |
| Jun 15, 2021 | 3.08% (0.03080) | 0.00th | v1 |
| Apr 14, 2021 | 2.88% (0.02880) | 0.00th | v1 |
References (18)
- http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00009.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- http://packetstormsecurity.com/files/155212/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html x_refsource_MISCThird Party AdvisoryVDB Entry
- https://access.redhat.com/security/cve/CVE-2019-16746 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1760306 Issue Tracking
- https://lists.debian.org/debian-lts-announce/2020/01/msg00013.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/03/msg00001.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TASE2ESEZAER6DTZH3DJ4K2JNO46TVL7/ vendor-advisoryx_refsource_FEDORA
- https://marc.info/?l=linux-wireless&m=156901391225058&w=2 x_refsource_MISCMailing ListPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2019-16746
- https://seclists.org/bugtraq/2019/Nov/11 mailing-listx_refsource_BUGTRAQMailing ListThird Party Advisory
- https://security.netapp.com/advisory/ntap-20191031-0005/ x_refsource_CONFIRMThird Party Advisory
- https://usn.ubuntu.com/4183-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://usn.ubuntu.com/4186-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://usn.ubuntu.com/4209-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://usn.ubuntu.com/4210-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2019-16746
- https://www.oracle.com/security-alerts/cpuApr2021.html x_refsource_MISCThird Party Advisory
Change history (0)
No recorded changes yet.