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CVE-2026-23222
high
CVSS 7.8
Vulnerability in linux (CVE-2026-23222)
Summary
vulnerability in linux (CVE-2026-23222). Successful exploitation can lead to full system takeover.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-23222** has been found in linux.
Successful exploitation can lead to full system takeover. CVSS score: 7.8/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "linux CVE-2026-23222" on the vendor's site.
CVE-2026-23222 (linux) — CVSS v3 7.8
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: High (CVSS 7.8/10). 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
-
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/1562b1fb7e17c1b3addb15e125c718b2be7f5512
- web https://git.kernel.org/stable/c/2ed27b5a1174351148c3adbfc0cd86d54072ba2e
- web https://git.kernel.org/stable/c/31aff96a41ae6f1f1687c065607875a27c364da8
- web https://git.kernel.org/stable/c/6edf8df4bd29f7bfd245b67b2c31d905f1cfc14b
- web https://git.kernel.org/stable/c/79f95b51d4278044013672c27519ae88d07013d8
- web https://git.kernel.org/stable/c/953c81941b0ad373674656b8767c00234ebf17ac
- web https://git.kernel.org/stable/c/c184341920ed78b6466360ed7b45b8922586c38f
- web https://git.kernel.org/stable/c/d1836c628cb72734eb5f7dfd4c996a9c18bba3ad
- web https://cert-portal.siemens.com/productcert/html/ssa-253495.html
- web https://nvd.nist.gov/vuln/detail/CVE-2026-23222
- web https://github.com/advisories/GHSA-5qf3-3gp9-pjx6