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CVE-2026-43043
medium
CVSS 5.5
Vulnerability in linux (CVE-2026-43043)
Summary
vulnerability in linux (CVE-2026-43043). Risk of unauthorized operations or information disclosure.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-43043** 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-2026-43043" on the vendor's site.
CVE-2026-43043 (linux) — CWE-476 / 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-476) 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。
-
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/00cbdec17c15d024a1c5002c7365df7624a18a75
- web https://git.kernel.org/stable/c/44eafa39363e8d5dfda6a8c6eb6b45458ed4b948
- web https://git.kernel.org/stable/c/4b03ab0a587ec57eb7ddb5c115d84a42896f60f7
- web https://git.kernel.org/stable/c/62397b493e14107ae82d8b80938f293d95425bcb
- web https://git.kernel.org/stable/c/7195350fb78538c25cd790d703f8f2c73ee0d395
- web https://git.kernel.org/stable/c/7cdf2c6381b21ab5ccf8116750d5582fcd6c0f49
- web https://git.kernel.org/stable/c/f48d3dd99199180cf37d6253550c55e86372309a
- web https://git.kernel.org/stable/c/f9acceae7b004956851fd4268edf9f518a9bce04
- web https://nvd.nist.gov/vuln/detail/CVE-2026-43043
- web https://github.com/advisories/GHSA-87mg-5j2r-6p32