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USN-6896-2

Vulnerability in linux-hwe-5.4 (USN-6896-2)

Summary

vulnerability in linux-hwe-5.4 (USN-6896-2). Risk of unauthorized operations or information disclosure. Mitigation: upgrade to `5.4.0-189.209~18.04.1` or later.

AI summary snake-internal / snake-material-v2

A vulnerability tracked as **USN-6896-2** has been found in linux-hwe-5.4. Risk of unauthorized operations or information disclosure. CVSS score: ?/10. What to do: upgrade linux-hwe-5.4 to **5.4.0-189.209~18.04.1** or later. If unsure, ask your IT team or search "linux-hwe-5.4 USN-6896-2" on the vendor's site.
USN-6896-2 (linux-hwe-5.4) — Patched: `5.4.0-189.209~18.04.1` — 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-hwe-5.4.
📍 Affected scope
linux-hwe-5.4 — .
🔥 Severity
Severity: ?. Risk of unauthorized operations or information disclosure
🔧 How to fix
Update to **5.4.0-189.209~18.04.1**.
🛡️ 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-hwe-5.4' .` 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. 1
    Identify exposure identify 
    grep -r 'linux-hwe-5.4' . | 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-hwe-5.4` を grep し、稼働しているサービス・バージョンを把握する。

  2. 6
    Apply patch patch 
    Upgrade linux-hwe-5.4 to 5.4.0-189.209~18.04.1

    ステージング環境で 5.4.0-189.209~18.04.1 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。

  3. 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:Pro:18.04:LTS linux-hwe-5.4
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.4.0-189.209~18.04.1"}]}]
Ubuntu:Pro:18.04:LTS linux-oracle-5.4
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.4.0-1127.136~18.04.1"}]}]

References

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