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CVE-2026-31682
critical
CVSS 9.1
Vulnerability in linux (CVE-2026-31682)
Summary
vulnerability in linux (CVE-2026-31682). Confidential information can be exposed externally.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-31682** has been found in linux.
Confidential information can be exposed externally. CVSS score: 9.1/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "linux CVE-2026-31682" on the vendor's site.
CVE-2026-31682 (linux) — CVSS v3 9.1
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 9.1/10). Confidential information can be exposed externally
🔧 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/2ba4caba423ed94d63006eb1d2227b0332ab7fcd
- web https://git.kernel.org/stable/c/3a30f6469b058574f49efde61cd6f5d79e576053
- web https://git.kernel.org/stable/c/4f397b950c916e9a1f8a4fce04ea0110206cad47
- web https://git.kernel.org/stable/c/658261898130da620fc3d0fbb0523efb3366cb55
- web https://git.kernel.org/stable/c/9c55e41c73af5c4511070933b1bd25248521270c
- web https://git.kernel.org/stable/c/a01aee7cafc575bb82f5529e8734e7052f9b16ea
- web https://git.kernel.org/stable/c/bd91ec85aa4c77d645bd2739fc56784157a88ca2
- web https://git.kernel.org/stable/c/c68433fd291c9e88c00292095172c62d1997d662
- 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-2026-31682
- web https://github.com/advisories/GHSA-r8hp-cx2w-5c4r