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CVE-2026-31414
critical
CVSS 9.8
Vulnerability in linux (CVE-2026-31414)
Summary
vulnerability in linux (CVE-2026-31414). Successful exploitation can lead to full system takeover.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-31414** has been found in linux.
Successful exploitation can lead to full system takeover. CVSS score: 9.8/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "linux CVE-2026-31414" on the vendor's site.
CVE-2026-31414 (linux) — CVSS v3 9.8
Attack vector: remote (network-reachable) / unauthenticated / 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: Critical (CVSS 9.8/10). 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
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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/3dfd3f7712b5a800f2ba632179e9b738076a51f0
- web https://git.kernel.org/stable/c/4bd1b3d839172724b33d8d02c5a4ff6a1c775417
- web https://git.kernel.org/stable/c/847cb7fe26c5ce5dce0d1a41fac1ea488b7f1781
- web https://git.kernel.org/stable/c/b53294bff19e56ada2f230ceb8b1ffde61cc3817
- web https://git.kernel.org/stable/c/e7ccaa0a62a8ff2be5d521299ce79390c318d306
- web https://git.kernel.org/stable/c/f01794106042ee27e54af6fdf5b319a2fe3df94d
- 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-2026-31414
- web https://github.com/advisories/GHSA-79r8-qx2r-f755