Vulnerability in linux (UBUNTU-CVE-2016-4569)

Summary

vulnerability in linux (UBUNTU-CVE-2016-4569). Confidential information can be exposed externally. Mitigation: upgrade to `3.13.0-91.138` or later.

AI summary snake-internal / snake-material-v2

A vulnerability tracked as **UBUNTU-CVE-2016-4569** has been found in linux. Confidential information can be exposed externally. CVSS score: ?/10. What to do: upgrade linux to **3.13.0-91.138** or later. If unsure, ask your IT team or search "linux UBUNTU-CVE-2016-4569" on the vendor's site.

UBUNTU-CVE-2016-4569 (linux) — Attack vector: local / no user interaction Patched: `3.13.0-91.138` — 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.

📍 Affected scope

linux — .

🔥 Severity

Severity: ?. Confidential information can be exposed externally

🔧 How to fix

Update to **3.13.0-91.138**.

🛡️ 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' .` against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.

Response Actions (7 steps)

Concrete steps and command examples for SOC/SRE teams to execute in order

1
Identify exposure identify
```
grep -r 'linux' . | 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` を grep し、稼働しているサービス・バージョンを把握する。
6
Apply patch patch
```
Upgrade linux to 3.13.0-91.138
```
ステージング環境で 3.13.0-91.138 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と、Step 3 で見つけた異常検知の続報チェックを含めること。
7
Post-deployment verification verify
```
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 Step 3 と同じログクエリでアラート再発が無いか継続監視。

Affected packages

Ubuntu:14.04:LTS linux

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.13.0-91.138"}]}]

Ubuntu:14.04:LTS linux-lts-utopic

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.16.0-76.98~14.04.1"}]}]

Ubuntu:14.04:LTS linux-lts-vivid

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.19.0-64.72~14.04.1"}]}]

Ubuntu:14.04:LTS linux-lts-wily

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.2.0-41.48~14.04.1"}]}]

Ubuntu:14.04:LTS linux-lts-xenial

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.4.0-28.47~14.04.1"}]}]

Ubuntu:16.04:LTS linux

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.4.0-28.47"}]}]

Ubuntu:16.04:LTS linux-raspi2

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.4.0-1016.22"}]}]

Ubuntu:16.04:LTS linux-snapdragon

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.4.0-1019.22"}]}]

Ubuntu:18.04:LTS linux-azure