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CVE-2026-31622
high
CVSS 8.8
Vulnerability in linux (CVE-2026-31622)
Summary
vulnerability in linux (CVE-2026-31622). Successful exploitation can lead to full system takeover.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-31622** has been found in linux.
Successful exploitation can lead to full system takeover. CVSS score: 8.8/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "linux CVE-2026-31622" on the vendor's site.
CVE-2026-31622 (linux) — CWE-120 / CVSS v3 8.8
Attack vector: adjacent-network / 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** (CWE-120) exists in linux.
📍 Affected scope
linux — .
🔥 Severity
Severity: High (CVSS 8.8/10). 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/1bec5698b55aa2be5c3b983dba657c01d0fd3dbc
- web https://git.kernel.org/stable/c/20663102c14566e900e1d2f679e30b7f1694f387
- web https://git.kernel.org/stable/c/2819f34e08bdffb6f06a51c67948ec5737fb166a
- web https://git.kernel.org/stable/c/46ce8be2ced389bccd84bcc04a12cf2f4d0c22d1
- web https://git.kernel.org/stable/c/5a59bf70c38ee1eb4be03bab830bbc3a6f0bd1f1
- web https://git.kernel.org/stable/c/8d9d9bf3565271ca7ab9c716a94e87296177e7ba
- web https://git.kernel.org/stable/c/9ba6bb09e00b922d902f684f575779e5433fe6e3
- web https://git.kernel.org/stable/c/cc024a3de265ef6c58957f4990eccb9f806208cb
- web https://git.kernel.org/stable/c/f83b399aa05a0712e3b1569a30d3d90b3533d2ef
- web https://nvd.nist.gov/vuln/detail/CVE-2026-31622
- web https://github.com/advisories/GHSA-3r85-565g-4jhq