An issue was discovered in the Linux kernel before 5.0.6.
Priority LOW 25Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- Partial Red Hat: 11 fixed, 4 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat.
Summary
An issue was discovered in the Linux kernel before 5.0.6. In rx_queue_add_kobject() and netdev_queue_add_kobject() in net/core/net-sysfs.c, a reference count is mishandled, aka CID-a3e23f719f5c.
Why it matters now
EPSS 0.00439 38th percentileScored 2026-11-07
Fix Partial Red Hat: 3 advisoriesRed Hat: 11 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 · 5
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | before 5.0.6 | Vulnerable | Linux |
| cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* | 8.0 | Vulnerable | Debian |
| cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | 9.0 | Vulnerable | Debian |
| cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:* | 14.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:* | 16.04 | Vulnerable | Canonical |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions before 5.0.6 Vulnerable ·Linux
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
- cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:* Versions 14.04 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:* Versions 16.04 Vulnerable ·Canonical
Remediation
Red Hat 3 advisories
- RHSA-2020:5023 Released 2020-11-10 · Red Hat rating Moderatekernel security and bug fix update
- Red Hat Enterprise Linux Client (v. 7) bpftool-3.10.0-1160.6.1.el7, kernel-3.10.0-1160.6.1.el7, kernel-abi-whitelists-3.10.0-1160.6.1.el7 +8
- Red Hat Enterprise Linux Client Optional (v. 7) kernel-tools-libs-devel-3.10.0-1160.6.1.el7
- Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-tools-libs-devel-3.10.0-1160.6.1.el7
- Red Hat Enterprise Linux Server (v. 7) bpftool-3.10.0-1160.6.1.el7, kernel-3.10.0-1160.6.1.el7, kernel-abi-whitelists-3.10.0-1160.6.1.el7 +11
- Red Hat Enterprise Linux Server Optional (v. 7) kernel-debug-devel-3.10.0-1160.6.1.el7, kernel-tools-libs-devel-3.10.0-1160.6.1.el7
- Red Hat Enterprise Linux Workstation (v. 7) bpftool-3.10.0-1160.6.1.el7, kernel-3.10.0-1160.6.1.el7, kernel-abi-whitelists-3.10.0-1160.6.1.el7 +8
- Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-tools-libs-devel-3.10.0-1160.6.1.el7
- RHSA-2020:5026 Released 2020-11-10 · Red Hat rating Moderatekernel-rt security and bug fix update
- Red Hat Enterprise Linux for Real Time (v. 7) kernel-rt-3.10.0-1160.6.1.rt56.1139.el7, kernel-rt-debug-3.10.0-1160.6.1.rt56.1139.el7, kernel-rt-debug-devel-3.10.0-1160.6.1.rt56.1139.el7 +4
- Red Hat Enterprise Linux for Real Time for NFV (v. 7) kernel-rt-3.10.0-1160.6.1.rt56.1139.el7, kernel-rt-debug-3.10.0-1160.6.1.rt56.1139.el7, kernel-rt-debug-devel-3.10.0-1160.6.1.rt56.1139.el7 +7
- RHSA-2019:3517 Released 2019-11-05 · Red Hat rating Importantkernel security, bug fix, and enhancement update
- Red Hat CodeReady Linux Builder (v. 8) kernel-tools-libs-devel-4.18.0-147.el8
- Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-147.el8, kernel-4.18.0-147.el8, kernel-abi-whitelists-4.18.0-147.el8 +19
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 5 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 8 | Affected | No fix yet |
| Red Hat Enterprise MRG 2 | Affected | No fix planned: Out of support scope |
| Red Hat CodeReady Linux Builder (v. 8) | Fixed | RHSA-2019:3517 |
| Red Hat Enterprise Linux BaseOS (v. 8) | Fixed | RHSA-2019:3517 |
| Red Hat Enterprise Linux Client (v. 7) | Fixed | RHSA-2020:5023 |
| Red Hat Enterprise Linux Client Optional (v. 7) | Fixed | RHSA-2020:5023 |
| Red Hat Enterprise Linux ComputeNode Optional (v. 7) | Fixed | RHSA-2020:5023 |
| Red Hat Enterprise Linux Server (v. 7) | Fixed | RHSA-2020:5023 |
| Red Hat Enterprise Linux Server Optional (v. 7) | Fixed | RHSA-2020:5023 |
| Red Hat Enterprise Linux Workstation (v. 7) | Fixed | RHSA-2020:5023 |
| Red Hat Enterprise Linux Workstation Optional (v. 7) | Fixed | RHSA-2020:5023 |
| Red Hat Enterprise Linux for Real Time (v. 7) | Fixed | RHSA-2020:5026 |
| Red Hat Enterprise Linux for Real Time for NFV (v. 7) | Fixed | RHSA-2020:5026 |
Not affected: 4 products
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux Client (v. 7)
- Red Hat Enterprise Linux Server (v. 7)
- Red Hat Enterprise Linux Workstation (v. 7)
Timeline
- 2026-10-02 Threatist record created from CVE-2019-20811
- 2026-10-03 Alias added: GHSA-9758-m2fm-98xg
References
Sources
- CVE-2019-20811 · CVE Program
- CVE-2019-20811 · NVD
- FIRST EPSS
- GHSA-9758-m2fm-98xg · GitHub Advisory Database · CC BY 4.0
- CVE-2019-20811 · Red Hat security data · CC BY 4.0
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