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CVE-2026-31671
medium
CVSS 5.5
Vulnerability in linux (CVE-2026-31671)
Summary
vulnerability in linux (CVE-2026-31671). Risk of unauthorized operations or information disclosure.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-31671** 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-2026-31671" on the vendor's site.
CVE-2026-31671 (linux) — CWE-401 / 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** (CWE-401) 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/0616314b3b34f24cbb91da8c6bd8bcdc4c8592f9
- web https://git.kernel.org/stable/c/0a30dceb0e1f0c480d2482e6d7cebf8aebb6eb72
- web https://git.kernel.org/stable/c/6c55714c931051cd7f4839c19ce0867179fd22fe
- web https://git.kernel.org/stable/c/716c546e88cfe49d841658240e10cb57bc50a2cc
- web https://git.kernel.org/stable/c/d10119968d0e1f2b669604baf2a8b5fdb72fa6b4
- web https://git.kernel.org/stable/c/d27c02eec529f78055a46a5c9e6c62684382b2d8
- web https://git.kernel.org/stable/c/e0c8542c3d097ed4205ded51868195d5d6ddac62
- web https://git.kernel.org/stable/c/ff5ee507302303b15859753c3e0d67d38fd12c88
- web https://cert-portal.siemens.com/productcert/html/ssa-019113.html
- web https://cert-portal.siemens.com/productcert/html/ssa-082556.html
- web https://nvd.nist.gov/vuln/detail/CVE-2026-31671
- web https://github.com/advisories/GHSA-rv96-q2g6-r95w