This page tracks the Ubuntu fix status. The vulnerability itself is described on the main CVE page.
View CVE-2023-3812 →
Unrated
Vulnerability in linux-azure
UBUNTU-CVE-2023-3812
First seen on SecPulse
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as UBUNTU-CVE-2023-3812 has been found in linux-azure.
Successful exploitation can lead to full system takeover.
What to do: upgrade linux-azure to 4.15.0-1162.177~14.04.1 or later.
If unsure, ask your IT team or search "linux-azure UBUNTU-CVE-2023-3812" on the vendor's site.
UBUNTU-CVE-2023-3812 (linux-azure)
Attack vector: local / no user interaction
Patched: 4.15.0-1162.177~14.04.1 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
What is the problem
A vulnerability (unclassified) exists in linux-azure.
Affected scope
Check the vendor advisory for the affected versions of linux-azure.
Severity
Severity: ?. Successful exploitation can lead to full system takeover.
How to fix
Update to 4.15.0-1162.177~14.04.1.
Workaround
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Detection
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'linux-azure' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
-
1
Identify exposureidentify
grep -r 'linux-azure' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で
linux-azureを grep し、稼働しているサービス・バージョンを把握する。 -
2
Apply patchpatch
Upgrade linux-azure to 4.15.0-1162.177~14.04.1ステージング環境で 4.15.0-1162.177~14.04.1 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。
-
3
Post-deployment verificationverify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Affected packages
| Package | Affected → Fixed | |
|---|---|---|
| Ubuntu:Pro:14.04:LTSlinux-azure |
< 4.15.0-1162.177~14.04.1→ 4.15.0-1162.177~14.04.1 |
4.15.0-1162.177~14.04.1 |
| Ubuntu:Pro:16.04:LTSlinux-aws-hwe |
< 4.15.0-1151.164~16.04.1→ 4.15.0-1151.164~16.04.1 |
4.15.0-1151.164~16.04.1 |
| Ubuntu:Pro:16.04:LTSlinux-azure |
< 4.15.0-1162.177~16.04.1→ 4.15.0-1162.177~16.04.1 |
4.15.0-1162.177~16.04.1 |
| Ubuntu:Pro:16.04:LTSlinux-gcp |
< 4.15.0-1146.162~16.04.1→ 4.15.0-1146.162~16.04.1 |
4.15.0-1146.162~16.04.1 |
| Ubuntu:Pro:16.04:LTSlinux-hwe |
< 4.15.0-206.217~16.04.1→ 4.15.0-206.217~16.04.1 |
4.15.0-206.217~16.04.1 |
| Ubuntu:16.04:LTSlinux-hwe-edge |
All versions→ Not listed |
Not listed |
| Ubuntu:Pro:16.04:LTSlinux-oracle |
< 4.15.0-1115.126~16.04.1→ 4.15.0-1115.126~16.04.1 |
4.15.0-1115.126~16.04.1 |
| Ubuntu:18.04:LTSlinux |
< 4.15.0-206.217→ 4.15.0-206.217 |
4.15.0-206.217 |
| Ubuntu:18.04:LTSlinux-aws |
< 4.15.0-1151.164→ 4.15.0-1151.164 |
4.15.0-1151.164 |
| Ubuntu:18.04:LTSlinux-aws-5.4 |
< 5.4.0-1096.104~18.04.1→ 5.4.0-1096.104~18.04.1 |
5.4.0-1096.104~18.04.1 |
| Ubuntu:18.04:LTSlinux-azure-4.15 |
< 4.15.0-1162.177→ 4.15.0-1162.177 |
4.15.0-1162.177 |
| Ubuntu:18.04:LTSlinux-azure-5.4 |
< 5.4.0-1103.109~18.04.1→ 5.4.0-1103.109~18.04.1 |
5.4.0-1103.109~18.04.1 |
| Ubuntu:18.04:LTSlinux-gcp-4.15 |
< 4.15.0-1146.162→ 4.15.0-1146.162 |
4.15.0-1146.162 |
| Ubuntu:18.04:LTSlinux-gcp-5.4 |
< 5.4.0-1100.109~18.04.1→ 5.4.0-1100.109~18.04.1 |
5.4.0-1100.109~18.04.1 |
| Ubuntu:18.04:LTSlinux-hwe-5.4 |
< 5.4.0-139.156~18.04.1→ 5.4.0-139.156~18.04.1 |
5.4.0-139.156~18.04.1 |
| Ubuntu:18.04:LTSlinux-ibm-5.4 |
< 5.4.0-1044.49~18.04.1→ 5.4.0-1044.49~18.04.1 |
5.4.0-1044.49~18.04.1 |
| Ubuntu:18.04:LTSlinux-kvm |
< 4.15.0-1136.141→ 4.15.0-1136.141 |
4.15.0-1136.141 |
| Ubuntu:18.04:LTSlinux-oracle |
< 4.15.0-1115.126→ 4.15.0-1115.126 |
4.15.0-1115.126 |
| Ubuntu:18.04:LTSlinux-oracle-5.4 |
< 5.4.0-1093.102~18.04.1→ 5.4.0-1093.102~18.04.1 |
5.4.0-1093.102~18.04.1 |
| Ubuntu:18.04:LTSlinux-raspi-5.4 |
< 5.4.0-1080.91~18.04.1→ 5.4.0-1080.91~18.04.1 |
5.4.0-1080.91~18.04.1 |
| Ubuntu:18.04:LTSlinux-aws-5.0 |
All versions→ Not listed |
Not listed |
| Ubuntu:18.04:LTSlinux-aws-5.3 |
All versions→ Not listed |
Not listed |
| Ubuntu:18.04:LTSlinux-azure |
All versions→ Not listed |
Not listed |
| Ubuntu:18.04:LTSlinux-azure-5.3 |
All versions→ Not listed |
Not listed |
| Ubuntu:18.04:LTSlinux-azure-edge |
All versions→ Not listed |
Not listed |
| Ubuntu:18.04:LTSlinux-gcp |
All versions→ Not listed |
Not listed |
| Ubuntu:18.04:LTSlinux-gcp-5.3 |
All versions→ Not listed |
Not listed |
| Ubuntu:18.04:LTSlinux-gke-4.15 |
All versions→ Not listed |
Not listed |
| Ubuntu:18.04:LTSlinux-gke-5.4 |
All versions→ Not listed |
Not listed |
| Ubuntu:18.04:LTSlinux-gkeop-5.4 |
All versions→ Not listed |
Not listed |
| Ubuntu:18.04:LTSlinux-hwe |
All versions→ Not listed |
Not listed |
| Ubuntu:18.04:LTSlinux-hwe-edge |
All versions→ Not listed |
Not listed |
| Ubuntu:18.04:LTSlinux-oem |
All versions→ Not listed |
Not listed |
| Ubuntu:18.04:LTSlinux-oracle-5.0 |
All versions→ Not listed |
Not listed |
| Ubuntu:18.04:LTSlinux-oracle-5.3 |
All versions→ Not listed |
Not listed |
| Ubuntu:Pro:FIPS-updates:18.04:LTSlinux-aws-fips |
< 4.15.0-2090.96→ 4.15.0-2090.96 |
4.15.0-2090.96 |
| Ubuntu:Pro:FIPS-updates:18.04:LTSlinux-azure-fips |
< 4.15.0-2071.77→ 4.15.0-2071.77 |
4.15.0-2071.77 |
| Ubuntu:Pro:FIPS-updates:18.04:LTSlinux-fips |
< 4.15.0-1108.119→ 4.15.0-1108.119 |
4.15.0-1108.119 |
| Ubuntu:Pro:FIPS-updates:18.04:LTSlinux-gcp-fips |
< 4.15.0-2055.60→ 4.15.0-2055.60 |
4.15.0-2055.60 |
| Ubuntu:Pro:FIPS:18.04:LTSlinux-aws-fips |
All versions→ Not listed |
Not listed |
| Ubuntu:Pro:FIPS:18.04:LTSlinux-azure-fips |
All versions→ Not listed |
Not listed |
| Ubuntu:Pro:FIPS:18.04:LTSlinux-fips |
All versions→ Not listed |
Not listed |
| Ubuntu:Pro:FIPS:18.04:LTSlinux-gcp-fips |
All versions→ Not listed |
Not listed |
| Ubuntu:20.04:LTSlinux |
< 5.4.0-139.156→ 5.4.0-139.156 |
5.4.0-139.156 |
| Ubuntu:20.04:LTSlinux-aws |
< 5.4.0-1096.104→ 5.4.0-1096.104 |
5.4.0-1096.104 |
| Ubuntu:20.04:LTSlinux-aws-5.15 |
< 5.15.0-1030.34~20.04.1→ 5.15.0-1030.34~20.04.1 |
5.15.0-1030.34~20.04.1 |
| Ubuntu:20.04:LTSlinux-azure |
< 5.4.0-1103.109→ 5.4.0-1103.109 |
5.4.0-1103.109 |
| Ubuntu:20.04:LTSlinux-azure-5.15 |
< 5.15.0-1033.40~20.04.1→ 5.15.0-1033.40~20.04.1 |
5.15.0-1033.40~20.04.1 |
| Ubuntu:20.04:LTSlinux-bluefield |
< 5.4.0-1058.64→ 5.4.0-1058.64 |
5.4.0-1058.64 |
| Ubuntu:20.04:LTSlinux-gcp |
< 5.4.0-1100.109→ 5.4.0-1100.109 |
5.4.0-1100.109 |
| Ubuntu:20.04:LTSlinux-gcp-5.15 |
< 5.15.0-1029.36~20.04.1→ 5.15.0-1029.36~20.04.1 |
5.15.0-1029.36~20.04.1 |
| Ubuntu:20.04:LTSlinux-gkeop |
< 5.4.0-1064.68→ 5.4.0-1064.68 |
5.4.0-1064.68 |
| Ubuntu:20.04:LTSlinux-gkeop-5.15 |
< 5.15.0-1015.19~20.04.1→ 5.15.0-1015.19~20.04.1 |
5.15.0-1015.19~20.04.1 |
| Ubuntu:20.04:LTSlinux-hwe-5.15 |
< 5.15.0-60.66~20.04.1→ 5.15.0-60.66~20.04.1 |
5.15.0-60.66~20.04.1 |
| Ubuntu:20.04:LTSlinux-ibm |
< 5.4.0-1044.49→ 5.4.0-1044.49 |
5.4.0-1044.49 |
| Ubuntu:20.04:LTSlinux-intel-iotg-5.15 |
< 5.15.0-1025.30~20.04.1→ 5.15.0-1025.30~20.04.1 |
5.15.0-1025.30~20.04.1 |
| Ubuntu:20.04:LTSlinux-iot |
< 5.4.0-1012.14→ 5.4.0-1012.14 |
5.4.0-1012.14 |
| Ubuntu:20.04:LTSlinux-kvm |
< 5.4.0-1086.92→ 5.4.0-1086.92 |
5.4.0-1086.92 |
| Ubuntu:20.04:LTSlinux-lowlatency-hwe-5.15 |
< 5.15.0-60.66~20.04.1→ 5.15.0-60.66~20.04.1 |
5.15.0-60.66~20.04.1 |
| Ubuntu:20.04:LTSlinux-oracle |
< 5.4.0-1093.102→ 5.4.0-1093.102 |
5.4.0-1093.102 |
| Ubuntu:20.04:LTSlinux-oracle-5.15 |
< 5.15.0-1029.35~20.04.1→ 5.15.0-1029.35~20.04.1 |
5.15.0-1029.35~20.04.1 |
| Ubuntu:20.04:LTSlinux-raspi |
< 5.4.0-1080.91→ 5.4.0-1080.91 |
5.4.0-1080.91 |
| Ubuntu:20.04:LTSlinux-riscv-5.15 |
< 5.15.0-1029.33~20.04.1→ 5.15.0-1029.33~20.04.1 |
5.15.0-1029.33~20.04.1 |
| Ubuntu:20.04:LTSlinux-xilinx-zynqmp |
< 5.4.0-1021.25→ 5.4.0-1021.25 |
5.4.0-1021.25 |
| Ubuntu:20.04:LTSlinux-aws-5.11 |
All versions→ Not listed |
Not listed |
| Ubuntu:20.04:LTSlinux-aws-5.13 |
All versions→ Not listed |
Not listed |
| Ubuntu:20.04:LTSlinux-aws-5.8 |
All versions→ Not listed |
Not listed |
| Ubuntu:20.04:LTSlinux-azure-5.11 |
All versions→ Not listed |
Not listed |
| Ubuntu:20.04:LTSlinux-azure-5.13 |
All versions→ Not listed |
Not listed |
| Ubuntu:20.04:LTSlinux-azure-5.8 |
All versions→ Not listed |
Not listed |
| Ubuntu:20.04:LTSlinux-gcp-5.11 |
All versions→ Not listed |
Not listed |
| Ubuntu:20.04:LTSlinux-gcp-5.13 |
All versions→ Not listed |
Not listed |
| Ubuntu:20.04:LTSlinux-gcp-5.8 |
All versions→ Not listed |
Not listed |
| Ubuntu:20.04:LTSlinux-gke |
All versions→ Not listed |
Not listed |
| Ubuntu:20.04:LTSlinux-gke-5.15 |
All versions→ Not listed |
Not listed |
| Ubuntu:20.04:LTSlinux-hwe-5.11 |
All versions→ Not listed |
Not listed |
| Ubuntu:20.04:LTSlinux-hwe-5.13 |
All versions→ Not listed |
Not listed |
| Ubuntu:20.04:LTSlinux-hwe-5.8 |
All versions→ Not listed |
Not listed |
| Ubuntu:20.04:LTSlinux-intel-5.13 |
All versions→ Not listed |
Not listed |
| Ubuntu:20.04:LTSlinux-oem-5.10 |
All versions→ Not listed |
Not listed |
| Ubuntu:20.04:LTSlinux-oem-5.13 |
All versions→ Not listed |
Not listed |
| Ubuntu:20.04:LTSlinux-oem-5.14 |
All versions→ Not listed |
Not listed |
| Ubuntu:20.04:LTSlinux-oem-5.6 |
All versions→ Not listed |
Not listed |
| Ubuntu:20.04:LTSlinux-oracle-5.11 |
All versions→ Not listed |
Not listed |
| Ubuntu:20.04:LTSlinux-oracle-5.13 |
All versions→ Not listed |
Not listed |
| Ubuntu:20.04:LTSlinux-oracle-5.8 |
All versions→ Not listed |
Not listed |
| Ubuntu:20.04:LTSlinux-raspi2 |
All versions→ Not listed |
Not listed |
| Ubuntu:20.04:LTSlinux-riscv |
All versions→ Not listed |
Not listed |
| Ubuntu:20.04:LTSlinux-riscv-5.11 |
All versions→ Not listed |
Not listed |
| Ubuntu:20.04:LTSlinux-riscv-5.8 |
All versions→ Not listed |
Not listed |
| Ubuntu:Pro:FIPS-updates:20.04:LTSlinux-aws-fips |
< 5.4.0-1096.104+fips1→ 5.4.0-1096.104+fips1 |
5.4.0-1096.104+fips1 |
| Ubuntu:Pro:FIPS-updates:20.04:LTSlinux-azure-fips |
< 5.4.0-1103.109+fips1→ 5.4.0-1103.109+fips1 |
5.4.0-1103.109+fips1 |
| Ubuntu:Pro:FIPS-updates:20.04:LTSlinux-fips |
< 5.4.0-1072.81→ 5.4.0-1072.81 |
5.4.0-1072.81 |
| Ubuntu:Pro:FIPS-updates:20.04:LTSlinux-gcp-fips |
< 5.4.0-1100.109+fips1→ 5.4.0-1100.109+fips1 |
5.4.0-1100.109+fips1 |
| Ubuntu:Pro:FIPS:20.04:LTSlinux-aws-fips |
All versions→ Not listed |
Not listed |
| Ubuntu:Pro:FIPS:20.04:LTSlinux-azure-fips |
All versions→ Not listed |
Not listed |
| Ubuntu:Pro:FIPS:20.04:LTSlinux-fips |
All versions→ Not listed |
Not listed |
| Ubuntu:Pro:FIPS:20.04:LTSlinux-gcp-fips |
All versions→ Not listed |
Not listed |
| Ubuntu:22.04:LTSlinux |
< 5.15.0-60.66→ 5.15.0-60.66 |
5.15.0-60.66 |
| Ubuntu:22.04:LTSlinux-aws |
< 5.15.0-1030.34→ 5.15.0-1030.34 |
5.15.0-1030.34 |
| Ubuntu:22.04:LTSlinux-aws-5.19 |
All versions→ Not listed |
Not listed |
| Ubuntu:22.04:LTSlinux-azure |
< 5.15.0-1033.40→ 5.15.0-1033.40 |
5.15.0-1033.40 |
| Ubuntu:22.04:LTSlinux-azure-5.19 |
All versions→ Not listed |
Not listed |
| Ubuntu:22.04:LTSlinux-azure-fde |
< 5.15.0-1033.40.1→ 5.15.0-1033.40.1 |
5.15.0-1033.40.1 |
| Ubuntu:22.04:LTSlinux-azure-fde-5.19 |
All versions→ Not listed |
Not listed |
| Ubuntu:22.04:LTSlinux-gcp |
< 5.15.0-1029.36→ 5.15.0-1029.36 |
5.15.0-1029.36 |
| Ubuntu:22.04:LTSlinux-gcp-5.19 |
All versions→ Not listed |
Not listed |
| Ubuntu:22.04:LTSlinux-gke |
< 5.15.0-1027.32→ 5.15.0-1027.32 |
5.15.0-1027.32 |
| Ubuntu:22.04:LTSlinux-gkeop |
< 5.15.0-1015.19→ 5.15.0-1015.19 |
5.15.0-1015.19 |
| Ubuntu:22.04:LTSlinux-hwe-5.19 |
< 5.19.0-32.33~22.04.1→ 5.19.0-32.33~22.04.1 |
5.19.0-32.33~22.04.1 |
| Ubuntu:22.04:LTSlinux-ibm |
< 5.15.0-1025.28→ 5.15.0-1025.28 |
5.15.0-1025.28 |
| Ubuntu:22.04:LTSlinux-intel-iot-realtime |
All versions→ Not listed |
Not listed |
| Ubuntu:22.04:LTSlinux-intel-iotg |
< 5.15.0-1025.30→ 5.15.0-1025.30 |
5.15.0-1025.30 |
| Ubuntu:22.04:LTSlinux-kvm |
< 5.15.0-1028.33→ 5.15.0-1028.33 |
5.15.0-1028.33 |
| Ubuntu:22.04:LTSlinux-lowlatency |
< 5.15.0-60.66→ 5.15.0-60.66 |
5.15.0-60.66 |
| Ubuntu:22.04:LTSlinux-nvidia |
< 5.15.0-1017.17→ 5.15.0-1017.17 |
5.15.0-1017.17 |
| Ubuntu:22.04:LTSlinux-oem-5.17 |
All versions→ Not listed |
Not listed |
| Ubuntu:22.04:LTSlinux-oem-6.0 |
< 6.0.0-1008.8→ 6.0.0-1008.8 |
6.0.0-1008.8 |
| Ubuntu:22.04:LTSlinux-oracle |
< 5.15.0-1029.35→ 5.15.0-1029.35 |
5.15.0-1029.35 |
| Ubuntu:22.04:LTSlinux-raspi |
< 5.15.0-1024.26→ 5.15.0-1024.26 |
5.15.0-1024.26 |
| Ubuntu:22.04:LTSlinux-realtime |
All versions→ Not listed |
Not listed |
| Ubuntu:22.04:LTSlinux-riscv |
All versions→ Not listed |
Not listed |
| Ubuntu:22.04:LTSlinux-riscv-5.19 |
All versions→ Not listed |
Not listed |
| Ubuntu:22.04:LTSlinux-starfive-5.19 |
All versions→ Not listed |
Not listed |
| Ubuntu:Nvidia-BlueField:22.04:LTSlinux-bluefield |
< 5.15.0-1014.16→ 5.15.0-1014.16 |
5.15.0-1014.16 |
| Ubuntu:24.04:LTSlinux-raspi-realtime |
All versions→ Not listed |
Not listed |
| Ubuntu:26.04linux-nvidia |
All versions→ Not listed |
Not listed |
| Ubuntu:Nvidia-BlueField:24.04:LTSlinux-bluefield |
All versions→ Not listed |
Not listed |
| Ubuntu:26.04:LTSlinux-vmware |
All versions→ Not listed |
Not listed |
Original description The description as published by the source.
An out-of-bounds memory access flaw was found in the Linux kernel’s TUN/TAP device driver functionality in how a user generates a malicious (too big) networking packet when napi frags is enabled. This flaw allows a local user to crash or potentially escalate their privileges on the system.
Source: OSV.dev (Open Source Vulnerabilities) OSV
References
- report ubuntu.com
- report git.kernel.org
- report git.kernel.org
- report bugzilla.redhat.com
- report access.redhat.com
- report cve.org