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CVE-2026-64269
critical
CVSS 9.1
Vulnerability in linux (CVE-2026-64269)
Summary
vulnerability in linux (CVE-2026-64269). Confidential information can be exposed externally.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-64269** has been found in linux.
Confidential information can be exposed externally. CVSS score: 9.1/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "linux CVE-2026-64269" on the vendor's site.
CVE-2026-64269 (linux) — CVSS v3 9.1
Attack vector: remote (network-reachable) / unauthenticated / 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: Critical (CVSS 9.1/10). 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/2912f3d40355dabc08fdbaaf2764d02445fe88dc
- web https://git.kernel.org/stable/c/5a45d0aa1fa50a333ce5763ade744e2d89838667
- web https://git.kernel.org/stable/c/68c09762172f6224e9ddf9b0a60bacbb36e443eb
- web https://git.kernel.org/stable/c/6cada540150894e81042a0ae0c796a21a9a877da
- web https://git.kernel.org/stable/c/6f40246f4312fdbab5a13cc440adebf95eb2aa66
- web https://git.kernel.org/stable/c/963af8d97a8c6a117134a8d0db1415e0489200b1
- web https://git.kernel.org/stable/c/da3e44add94b05dfde56f898421922f5cf35705f
- web https://nvd.nist.gov/vuln/detail/CVE-2026-64269
- web https://github.com/advisories/GHSA-ffxc-rc5x-r6rp
- web https://git.kernel.org/stable/c/a35b7a8728a53ddc80b323970689fa5985816836