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CVE-2026-43225
medium
CVSS 5.5
Vulnerability in linux (CVE-2026-43225)
Summary
vulnerability in linux (CVE-2026-43225). Risk of unauthorized operations or information disclosure.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-43225** 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-2026-43225" on the vendor's site.
CVE-2026-43225 (linux) — CWE-401 / 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** (CWE-401) 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
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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/017295b17bf1f477246c95bd253a7ef0cb4684c9
- web https://git.kernel.org/stable/c/8311bb40698ba027649d5d1ca84ad4bf25270546
- web https://git.kernel.org/stable/c/9874e33ce52ba449ab0ade78752a2d37a2294617
- web https://git.kernel.org/stable/c/9f70f78e22b321429afc77befecedf05543d4e2c
- web https://git.kernel.org/stable/c/a968c6a39607c129b8ac2c3c2a5e8923574e90d0
- web https://git.kernel.org/stable/c/abe850d82c8cb72d28700673678724e779b1826e
- web https://git.kernel.org/stable/c/af48c1a0abe849e167fc754b6c260b6d8350b6fd
- web https://nvd.nist.gov/vuln/detail/CVE-2026-43225
- web https://github.com/advisories/GHSA-r27m-4434-33fh