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CVE-2025-38721
medium
CVSS 5.5
Vulnerability in linux (CVE-2025-38721)
Summary
vulnerability in linux (CVE-2025-38721). Risk of unauthorized operations or information disclosure.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2025-38721** has been found in linux.
Risk of unauthorized operations or information disclosure. CVSS score: 5.5/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "linux CVE-2025-38721" on the vendor's site.
CVE-2025-38721 (linux) — CVSS v3 5.5
Attack vector: local / no user interaction
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: Medium (CVSS 5.5/10). Risk of unauthorized operations or information disclosure
🔧 How to fix
Update to the patched release per vendor advisory.
🛡️ 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
-
1Identify 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。
-
7Post-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。
References
- web https://git.kernel.org/stable/c/19b909a4b1452fb97e477d2f08b97f8d04095619
- web https://git.kernel.org/stable/c/30cf811058552b8cd0e98dff677ef3f89d6d34ce
- web https://git.kernel.org/stable/c/41462f4cfc583513833f87f9ee55d12da651a7e3
- web https://git.kernel.org/stable/c/586892e341fbf698e7cbaca293e1353957db725a
- web https://git.kernel.org/stable/c/962518c6ca9f9a13df099cafa429f72f68ad61f0
- web https://git.kernel.org/stable/c/a2cb4df7872de069f809de2f076ec8e54d649fe3
- web https://git.kernel.org/stable/c/a62d6aa3f31f216b637a4c71b7a8bfc7c57f049b
- web https://git.kernel.org/stable/c/de788b2e6227462b6dcd0e07474e72c089008f74
- web https://git.kernel.org/stable/c/e14f72aa66c029db106921d621edcedef68e065b
- web https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
- web https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
- web https://cert-portal.siemens.com/productcert/html/ssa-032379.html
- web https://cert-portal.siemens.com/productcert/html/ssa-082556.html
- web https://nvd.nist.gov/vuln/detail/CVE-2025-38721
- web https://github.com/advisories/GHSA-6237-rh4h-82p6