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CVE-2026-53242
high
CVSS 7.8
Vulnerability in linux (CVE-2026-53242)
Summary
vulnerability in linux (CVE-2026-53242). Successful exploitation can lead to full system takeover.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-53242** 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-2026-53242" on the vendor's site.
CVE-2026-53242 (linux) — CWE-476 / 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-476) 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://nvd.nist.gov/vuln/detail/CVE-2026-53242
- web https://git.kernel.org/stable/c/7c71a9522555ff137a9ca36b15d759ca04d84788
- web https://git.kernel.org/stable/c/88fe2e3658726cb21ff2dcf9770bf672f9b9d31b
- web https://git.kernel.org/stable/c/b053fcd8912f06c30f932f5b8ec41c72de474695
- web https://git.kernel.org/stable/c/cac5bf3500ee6422cf64e0df0b5daeecfed42917
- web https://git.kernel.org/stable/c/cd98837db15f323463b8df07282ac723bd5c3fed
- web https://git.kernel.org/stable/c/d68b621bb5a48051932f1017a6e1bc9b18f854d0
- web https://git.kernel.org/stable/c/d842f26a167e77a36f3ed333b9fa99d36ef99fe6
- web https://github.com/advisories/GHSA-2p59-xc6p-6w7c