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CVE-2025-39742
medium
CVSS 5.5
Vulnerability in linux (CVE-2025-39742)
Summary
vulnerability in linux (CVE-2025-39742). Risk of unauthorized operations or information disclosure.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2025-39742** 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-2025-39742" on the vendor's site.
CVE-2025-39742 (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。
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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/1a7cf828ed861de5be1aff99e10f114b363c19d3
- web https://git.kernel.org/stable/c/31d0599a23efdbfe579bfbd1eb8f8c942f13744d
- web https://git.kernel.org/stable/c/4b4317b0d758ff92ba96f4e448a8992a6fe607bf
- web https://git.kernel.org/stable/c/59f7d2138591ef8f0e4e4ab5f1ab674e8181ad3a
- web https://git.kernel.org/stable/c/89fdac333a17ed990b41565630ef4791782e02f5
- web https://git.kernel.org/stable/c/9b05e91afe948ed819bf87d7ba0fccf451ed79a6
- web https://git.kernel.org/stable/c/9bba1a9994c523b44db64f63b564b4719ea2b7ef
- web https://git.kernel.org/stable/c/9d3211cb61a0773a2440d0a0698c1e6e7429f907
- web https://git.kernel.org/stable/c/ac53f377393cc85156afdc90b636e84e544a6f96
- 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-2025-39742
- web https://github.com/advisories/GHSA-3xq3-w9mf-92jr