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CVE-2026-31618
medium
CVSS 5.5
Vulnerability in linux (CVE-2026-31618)
Summary
vulnerability in linux (CVE-2026-31618). Risk of unauthorized operations or information disclosure.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-31618** 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-2026-31618" on the vendor's site.
CVE-2026-31618 (linux) — CWE-369 / 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** (CWE-369) 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。
-
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/2f207e46c62688bb7eb4e3feaf9a0d94020fb0c9
- web https://git.kernel.org/stable/c/53cb4e79a07124d2ebe502983c29800104080b47
- web https://git.kernel.org/stable/c/59bde9e0930efef1286768cb65fc78d5e5267f93
- web https://git.kernel.org/stable/c/63dfb0b4741f46d65b667c4275132b3d1966acc8
- web https://git.kernel.org/stable/c/6567d3e1aaadfebf44ce7dc9ea2630323cd4c736
- web https://git.kernel.org/stable/c/6c05191598eca87a87329b3f6e4a0825775f09cf
- web https://git.kernel.org/stable/c/859a239d58a812b61267d9944b701affe6a6244e
- web https://git.kernel.org/stable/c/8f98b81fe011e1879e6a7b1247e69e06a5e17af2
- web https://git.kernel.org/stable/c/fc386daa6846551a88d338ba9864fc2812cd9030
- web https://nvd.nist.gov/vuln/detail/CVE-2026-31618
- web https://github.com/advisories/GHSA-879h-m867-cpjq