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CVE-2025-39808
medium
CVSS 5.5
Vulnerability in linux (CVE-2025-39808)
Summary
vulnerability in linux (CVE-2025-39808). Risk of unauthorized operations or information disclosure.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2025-39808** 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-2025-39808" on the vendor's site.
CVE-2025-39808 (linux) — 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** (unclassified) 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/019c34ca11372de891c06644846eb41fca7c890c
- web https://git.kernel.org/stable/c/183def8e4d786e50165e5d992df6a3083e45e16c
- web https://git.kernel.org/stable/c/185c926283da67a72df20a63a5046b3b4631b7d9
- web https://git.kernel.org/stable/c/22ddb5eca4af5e69dffe2b54551d2487424448f1
- web https://git.kernel.org/stable/c/4338b0f6544c3ff042bfbaf40bc9afe531fb08c7
- web https://git.kernel.org/stable/c/6070123d5344d0950f10ef6a5fdc3f076abb7ad2
- web https://git.kernel.org/stable/c/98520a9a3d69a530dd1ee280cbe0abc232a35bff
- web https://git.kernel.org/stable/c/e422370e6ab28478872b914cee5d49a9bdfae0c6
- web https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
- web https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
- web https://cert-portal.siemens.com/productcert/html/ssa-032379.html
- web https://nvd.nist.gov/vuln/detail/CVE-2025-39808
- web https://github.com/advisories/GHSA-7j3c-c3g5-v328