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CVE-2026-43273
medium
CVSS 5.5
Vulnerability in linux (CVE-2026-43273)
Summary
vulnerability in linux (CVE-2026-43273). Risk of unauthorized operations or information disclosure.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-43273** 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-2026-43273" on the vendor's site.
CVE-2026-43273 (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/36673344b41c31fb502dd0d0113cec1aa96f581e
- web https://git.kernel.org/stable/c/4097e70fc543cca72982854108a32f6ae924e727
- web https://git.kernel.org/stable/c/531a76c5a2e44264cee8a70121e63eb28c1ba728
- web https://git.kernel.org/stable/c/5788b742007f53406049bef917833a71ddd43f60
- web https://git.kernel.org/stable/c/69e59a87bab0ea31ab2a584fc65e12dafacf8953
- web https://git.kernel.org/stable/c/757873abfc8ea38592582180aed0f57f0f0cb07a
- web https://git.kernel.org/stable/c/9efa154609cdb658f51c7d76b30a09f7e6485250
- web https://git.kernel.org/stable/c/f16bd3fa74a2084ee7e16a8a2be7e7399b970907
- web https://nvd.nist.gov/vuln/detail/CVE-2026-43273
- web https://github.com/advisories/GHSA-fcq7-vvcv-2qg9