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CVE-2026-31664
medium
CVSS 5.5
Vulnerability in linux (CVE-2026-31664)
Summary
vulnerability in linux (CVE-2026-31664). Risk of unauthorized operations or information disclosure.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-31664** 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-2026-31664" on the vendor's site.
CVE-2026-31664 (linux) — 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** (unclassified) 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。
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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/71a98248c63c535eaa4d4c22f099b68d902006d0
- web https://git.kernel.org/stable/c/a5127501c8d30b5728791b1e340284ca5c9cc4bd
- web https://git.kernel.org/stable/c/ac6985903db047eaff54db929e4bf6b06782788e
- web https://git.kernel.org/stable/c/b1dfd6b27df35ef4f87825aa5f607378d23ff0f2
- web https://git.kernel.org/stable/c/c221ed63a2769a0af8bd849dfe25740048f34ef4
- web https://git.kernel.org/stable/c/e1af65c669ebb1666c54576614c01a7f9ffcfff6
- web https://git.kernel.org/stable/c/e6f4ffe8596947a595c9544e73a73adcb0568b88
- web https://git.kernel.org/stable/c/eda30846ea54f8ed218468e5480c8305ca645e37
- web https://nvd.nist.gov/vuln/detail/CVE-2026-31664
- web https://github.com/advisories/GHSA-5fvv-6wpc-9mr7