An issue was discovered in net/wireless/nl80211.c in the Linux kernel through 5.2.17.
Priority MEDIUM 56CWE-120Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Partial Red Hat: 12 fixed, 4 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-120 and the CVSS impact.
Summary
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.
Why it matters now
EPSS 0.12651 96th percentileScored 2026-11-07
Fix Partial Red Hat: 3 advisoriesRed Hat: 12 fixed, 4 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 8
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 2.6.25 to before 3.16.79; 3.17 to before 4.4.197; 4.5 to before 4.9.197; 4.10 to before 4.14.149; 4.15 to before 4.19.79; 4.20 to before 5.3.6 | Vulnerable | Linux |
| cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* | 8.0 | Vulnerable | Debian |
| cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:* | 16.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* | 18.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:* | 19.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:* | 19.10 | Vulnerable | Canonical |
| cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:* | 30 | Vulnerable | Fedoraproject |
| cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* | 15.1 | Vulnerable | openSUSE |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 2.6.25 to before 3.16.79; 3.17 to before 4.4.197; 4.5 to before 4.9.197; 4.10 to before 4.14.149; 4.15 to before 4.19.79; 4.20 to before 5.3.6 Vulnerable ·Linux
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:* Versions 16.04 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* Versions 18.04 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:* Versions 19.04 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:* Versions 19.10 Vulnerable ·Canonical
- cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:* Versions 30 Vulnerable ·Fedoraproject
- cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* Versions 15.1 Vulnerable ·openSUSE
Remediation
Red Hat 3 advisories
- RHSA-2020:1769 Released 2020-04-28 · Red Hat rating Importantkernel security, bug fix, and enhancement update
- Red Hat CodeReady Linux Builder (v. 8) kernel-tools-libs-devel-4.18.0-193.el8
- Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-193.el8, kernel-4.18.0-193.el8, kernel-abi-whitelists-4.18.0-193.el8 +19
- RHSA-2020:1070 Released 2020-03-31 · Red Hat rating Moderatekernel-rt security and bug fix update
- Red Hat Enterprise Linux for Real Time (v. 7) kernel-rt-3.10.0-1127.rt56.1093.el7, kernel-rt-debug-3.10.0-1127.rt56.1093.el7, kernel-rt-debug-devel-3.10.0-1127.rt56.1093.el7 +4
- Red Hat Enterprise Linux for Real Time for NFV (v. 7) kernel-rt-3.10.0-1127.rt56.1093.el7, kernel-rt-debug-3.10.0-1127.rt56.1093.el7, kernel-rt-debug-devel-3.10.0-1127.rt56.1093.el7 +7
- RHSA-2020:1016 Released 2020-03-31 · Red Hat rating Moderatekernel security, bug fix, and enhancement update
- Red Hat Enterprise Linux Client (v. 7) bpftool-3.10.0-1127.el7, kernel-3.10.0-1127.el7, kernel-abi-whitelists-3.10.0-1127.el7 +8
- Red Hat Enterprise Linux Client Optional (v. 7) kernel-tools-libs-devel-3.10.0-1127.el7
- Red Hat Enterprise Linux ComputeNode (v. 7) bpftool-3.10.0-1127.el7, kernel-3.10.0-1127.el7, kernel-abi-whitelists-3.10.0-1127.el7 +8
- Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-tools-libs-devel-3.10.0-1127.el7
- Red Hat Enterprise Linux Server (v. 7) bpftool-3.10.0-1127.el7, kernel-3.10.0-1127.el7, kernel-abi-whitelists-3.10.0-1127.el7 +11
- Red Hat Enterprise Linux Server Optional (v. 7) kernel-debug-devel-3.10.0-1127.el7, kernel-tools-libs-devel-3.10.0-1127.el7
- Red Hat Enterprise Linux Workstation (v. 7) bpftool-3.10.0-1127.el7, kernel-3.10.0-1127.el7, kernel-abi-whitelists-3.10.0-1127.el7 +8
- Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-tools-libs-devel-3.10.0-1127.el7
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux 8 | Affected | No fix yet |
| Red Hat Enterprise MRG 2 | Affected | No fix planned: Will not fix |
| Red Hat CodeReady Linux Builder (v. 8) | Fixed | RHSA-2020:1769 |
| Red Hat Enterprise Linux BaseOS (v. 8) | Fixed | RHSA-2020:1769 |
| Red Hat Enterprise Linux Client (v. 7) | Fixed | RHSA-2020:1016 |
| Red Hat Enterprise Linux Client Optional (v. 7) | Fixed | RHSA-2020:1016 |
| Red Hat Enterprise Linux ComputeNode (v. 7) | Fixed | RHSA-2020:1016 |
| Red Hat Enterprise Linux ComputeNode Optional (v. 7) | Fixed | RHSA-2020:1016 |
| Red Hat Enterprise Linux Server (v. 7) | Fixed | RHSA-2020:1016 |
| Red Hat Enterprise Linux Server Optional (v. 7) | Fixed | RHSA-2020:1016 |
| Red Hat Enterprise Linux Workstation (v. 7) | Fixed | RHSA-2020:1016 |
| Red Hat Enterprise Linux Workstation Optional (v. 7) | Fixed | RHSA-2020:1016 |
| Red Hat Enterprise Linux for Real Time (v. 7) | Fixed | RHSA-2020:1070 |
| Red Hat Enterprise Linux for Real Time for NFV (v. 7) | Fixed | RHSA-2020:1070 |
Not affected: 1 product
- Red Hat Enterprise Linux 5
Timeline
- 2026-10-02 Threatist record created from CVE-2019-16746
- 2026-10-03 Alias added: GHSA-7rf2-mmqc-5w99
References
Advisory 13
- FEDORA-2019-057d691fd4
- 20191108 [slackware-security] Slackware 14.2 kernel (SSA:2019-311-01)
- USN-4183-1
- USN-4186-1
- USN-4209-1
- USN-4210-1
- [debian-lts-announce] 20200118 [SECURITY] [DLA 2068-1] linux security update
- [debian-lts-announce] 20200302 [SECURITY] [DLA 2114-1] linux-4.9 security update
- openSUSE-SU-2020:0336
- openSUSE-SU-2020:1153
- https://www.oracle.com/security-alerts/cpuApr2021.html
- http://packetstormsecurity.com/files/155212/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html
- https://security.netapp.com/advisory/ntap-20191031-0005/
Sources
- CVE-2019-16746 · CVE Program
- CVE-2019-16746 · NVD
- FIRST EPSS
- GHSA-7rf2-mmqc-5w99 · GitHub Advisory Database · CC BY 4.0
- CVE-2019-16746 · Red Hat security data · CC BY 4.0
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