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CVE-2026-64243
high
CVSS 7.1
Vulnerability in linux (CVE-2026-64243)
Summary
vulnerability in linux (CVE-2026-64243). Confidential information can be exposed externally.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-64243** has been found in linux.
Confidential information can be exposed externally. CVSS score: 7.1/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "linux CVE-2026-64243" on the vendor's site.
CVE-2026-64243 (linux) — CWE-129 / CVSS v3 7.1
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-129) exists in linux.
📍 Affected scope
linux — .
🔥 Severity
Severity: High (CVSS 7.1/10). 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/05ef77f02607a3dc5d7f9762cb990f76843315d4
- web https://git.kernel.org/stable/c/164dcbec9632ca93ae313e6da6e4e05584fa0f02
- web https://git.kernel.org/stable/c/2ff3ac6f7664fe5639cad01712ac5e021fa7939c
- web https://git.kernel.org/stable/c/5fe860af8630cf7c78523cbd68e5a234743585aa
- web https://git.kernel.org/stable/c/6fb653b62f169f6050fac45b56bf21ad097e19f6
- web https://git.kernel.org/stable/c/d8cc3e747b002a8b965c529de79c0654675b9a1a
- web https://git.kernel.org/stable/c/f63ad68e18d774a5d15cd7e405ead63f6b322679
- web https://nvd.nist.gov/vuln/detail/CVE-2026-64243
- web https://github.com/advisories/GHSA-g8x3-7685-9cvh