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CVE-2026-31447
high
CVSS 7.8
Vulnerability in linux (CVE-2026-31447)
Summary
vulnerability in linux (CVE-2026-31447). Successful exploitation can lead to full system takeover.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-31447** 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-2026-31447" on the vendor's site.
CVE-2026-31447 (linux) — CVSS v3 7.8
Attack vector: local / unauthenticated
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/3822743dc20386d9897e999dbb990befa3a5b3f8
- web https://git.kernel.org/stable/c/3a926957cc95899ef88529710836edadc03c71a1
- web https://git.kernel.org/stable/c/5ad6d994255e27a3254079dfb50ca861fc31f2d0
- web https://git.kernel.org/stable/c/7b58c110b4e1f028eb38eec9ed3555e9be81c8b0
- web https://git.kernel.org/stable/c/7d5b04290156c3fc316eecc86a4f9d201ab7d44a
- web https://git.kernel.org/stable/c/ad1f6d608f33f59d21a3d025615d6786a6443998
- web https://git.kernel.org/stable/c/b77de3fceafbb39f30e4ff5dc986f863d5456417
- web https://git.kernel.org/stable/c/d787d3ae96648dc14a3b7ca8fde817177e82c1c7
- 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-2026-31447
- web https://github.com/advisories/GHSA-mgcw-5h4f-3529