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CVE-2026-31708
high
CVSS 8.1
Out-of-Bounds Read in linux (CVE-2026-31708)
Summary
vulnerability in linux (CVE-2026-31708). Confidential information can be exposed externally.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-31708** has been found in linux.
Confidential information can be exposed externally. CVSS score: 8.1/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "linux CVE-2026-31708" on the vendor's site.
CVE-2026-31708 (linux) — CWE-125 / CVSS v3 8.1
Attack vector: remote (network-reachable) / unauthenticated
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
**out-of-bounds read** (CWE-125) exists in linux.
📍 Affected scope
linux — .
🔥 Severity
Severity: High (CVSS 8.1/10). 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/078fae8f50adebb903ccf2252b44391324571e78
- web https://git.kernel.org/stable/c/1dd757379997b71a328a4b591ffaf481acd0ead1
- web https://git.kernel.org/stable/c/85fd46ee26a11841c670449508025965f61ce131
- web https://git.kernel.org/stable/c/a34d456934fe42e4da5d2cc07787bf418bee99c6
- web https://git.kernel.org/stable/c/a58c5af19ff0d6f44f6e9fe31e33a2c92223f77e
- web https://git.kernel.org/stable/c/ac2f14e4705d020f04e806efa0d49ab8dc2b145f
- web https://nvd.nist.gov/vuln/detail/CVE-2026-31708
- web https://github.com/advisories/GHSA-9grv-w29f-qpm9
- web https://git.kernel.org/stable/c/9e203dbb5402897c43130fb171a2617008a91f45
- web https://git.kernel.org/stable/c/e66bdc0704977ecee667a81d38255b579c2353d0