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CVE-2026-43266
medium
CVSS 5.5
Vulnerability in linux (CVE-2026-43266)
Summary
vulnerability in linux (CVE-2026-43266). Risk of unauthorized operations or information disclosure.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-43266** 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-2026-43266" on the vendor's site.
CVE-2026-43266 (linux) — 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** (unclassified) 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/25b290624b0e3d2f0f90238709ee0b6009b9fde8
- web https://git.kernel.org/stable/c/45766863baf899059e75595dd3cb1116467f2095
- web https://git.kernel.org/stable/c/64eb63f573f497553e1a0c388bbcdd639e0f0704
- web https://git.kernel.org/stable/c/a68d22902a6916e10ee235fee609239004e129d0
- web https://git.kernel.org/stable/c/be10c1bdf64a39832998f54900aa309b3917abcf
- web https://git.kernel.org/stable/c/c80113dcfc807308f5ab33847fae77e07531aeb8
- web https://git.kernel.org/stable/c/ca2aad8771aa9091bc9e42e7d546bd40b72ddcd4
- web https://git.kernel.org/stable/c/eae21beecb95a3b69ee5c38a659f774e171d730e
- web https://nvd.nist.gov/vuln/detail/CVE-2026-43266
- web https://github.com/advisories/GHSA-r9ph-9m45-xj6w