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CVE-2025-71221
high
CVSS 7.0
Vulnerability in linux (CVE-2025-71221)
Summary
vulnerability in linux (CVE-2025-71221). Successful exploitation can lead to full system takeover.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2025-71221** has been found in linux.
Successful exploitation can lead to full system takeover. CVSS score: 7.0/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "linux CVE-2025-71221" on the vendor's site.
CVE-2025-71221 (linux) — CWE-362 / CVSS v3 7.0
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** (CWE-362) exists in linux.
📍 Affected scope
linux — .
🔥 Severity
Severity: High (CVSS 7.0/10). Successful exploitation can lead to full system takeover
🔧 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
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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。
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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/3f0e0e2d9e752570041e95fd04635e2580097819
- web https://git.kernel.org/stable/c/9f665b3c3d9a168410251f27a5d019b7bf93185c
- web https://git.kernel.org/stable/c/a143545855bc2c6e1330f6f57ae375ac44af00a7
- web https://git.kernel.org/stable/c/dfb5e05227745de43b7fd589721817a4337c970d
- web https://git.kernel.org/stable/c/eba0c75670c022cb1f948600db972524bcfe8166
- web https://git.kernel.org/stable/c/fc023b8fab057f0c910856ff36d3e12a30b7af4a
- web https://nvd.nist.gov/vuln/detail/CVE-2025-71221
- web https://github.com/advisories/GHSA-959m-9w2w-7jxc