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CVE-2026-31489
high
CVSS 7.8
Vulnerability in linux (CVE-2026-31489)
Summary
vulnerability in linux (CVE-2026-31489). Successful exploitation can lead to full system takeover.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-31489** 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-2026-31489" on the vendor's site.
CVE-2026-31489 (linux) — CWE-415 / CVSS v3 7.8
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-415) 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
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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/0d645c6d13fa0597935d3d16b09a7ba5d24ed284
- web https://git.kernel.org/stable/c/40ad0334c17b23d8b66b1082ad1478a6202e90e2
- web https://git.kernel.org/stable/c/63542bb402b7013171c9f621c28b609eda4dbf1f
- web https://git.kernel.org/stable/c/9b812ceb75a6260c17c91db4b9e74ead8cfa06f5
- web https://git.kernel.org/stable/c/da06a104f0486355073ff0d1bcb1fcbebb7080d6
- web https://nvd.nist.gov/vuln/detail/CVE-2026-31489
- web https://github.com/advisories/GHSA-2pvh-447j-v7m6
- web https://git.kernel.org/stable/c/7434c64ddae88a02e7fb478bc256cc100d48d3e3
- web https://git.kernel.org/stable/c/d61bcec3aec6f0244a9b963e0c76c00f771d49b6
- web https://git.kernel.org/stable/c/01f5f7976c24d6e9beef6b5a410af3b9b1d4d476