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CVE-2025-39790
high
CVSS 7.8
Vulnerability in linux (CVE-2025-39790)
Summary
vulnerability in linux (CVE-2025-39790). Successful exploitation can lead to full system takeover.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2025-39790** has been found in linux.
Successful exploitation can lead to full system takeover. CVSS score: 7.8/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "linux CVE-2025-39790" on the vendor's site.
CVE-2025-39790 (linux) — CWE-415 / CVSS v3 7.8
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-415) exists in linux.
📍 Affected scope
linux — .
🔥 Severity
Severity: High (CVSS 7.8/10). Successful exploitation can lead to full system takeover
🔧 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/2ec99b922f4661521927eeada76f431eebfbabc4
- web https://git.kernel.org/stable/c/4079c6c59705b96285219b9efc63cab870d757b7
- web https://git.kernel.org/stable/c/44e1a079e18f78d6594a715b0c6d7e18c656f7b9
- web https://git.kernel.org/stable/c/5bd398e20f0833ae8a1267d4f343591a2dd20185
- web https://git.kernel.org/stable/c/5e17429679a8545afe438ce7a82a13a54e8ceabb
- web https://git.kernel.org/stable/c/7b3f0e3b60c27f4fcb69927d84987e5fd6240530
- 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-2025-39790
- web https://github.com/advisories/GHSA-q63v-r8x9-2c5r