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CVE-2026-31612
high
CVSS 7.5
Vulnerability in linux (CVE-2026-31612)
Summary
vulnerability in linux (CVE-2026-31612). Confidential information can be exposed externally.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-31612** has been found in linux.
Confidential information can be exposed externally. CVSS score: 7.5/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "linux CVE-2026-31612" on the vendor's site.
CVE-2026-31612 (linux) — CVSS v3 7.5
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: High (CVSS 7.5/10). 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
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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/243b206bcb5a7137e8bddd57b2eec81e1ebd3859
- web https://git.kernel.org/stable/c/3363a770b193f555f29d76ddf4ced3305c0ccf6d
- web https://git.kernel.org/stable/c/4b73376feecb3b61172fe5b4ff42bbbb8531669d
- web https://git.kernel.org/stable/c/551dfb15b182abad4600eaf7b37e6eb7000d5b1b
- web https://git.kernel.org/stable/c/66751841212c2cc196577453c37f7774ff363f02
- web https://git.kernel.org/stable/c/859f11e1bc81a4d32bb3ceeae54bcd296ac675d3
- web https://git.kernel.org/stable/c/dfc6878d14acafffbe670bf2576620757a10a3d8
- web https://nvd.nist.gov/vuln/detail/CVE-2026-31612
- web https://github.com/advisories/GHSA-mgh3-34fv-3j84