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CVE-2026-23442
medium
CVSS 5.5
Vulnerability in linux (CVE-2026-23442)
Summary
vulnerability in linux (CVE-2026-23442). Risk of unauthorized operations or information disclosure.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-23442** 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-2026-23442" on the vendor's site.
CVE-2026-23442 (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
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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/0348fa0ada37cef7c6b5ab2a428bb2c6aee784e4
- web https://git.kernel.org/stable/c/06413793526251870e20402c39930804f14d59c0
- web https://git.kernel.org/stable/c/50352fc103928e10e8729abc79a0d05abef26c4d
- web https://git.kernel.org/stable/c/83d705d35e583cb1b1eacf196dfe7b77d442018e
- web https://git.kernel.org/stable/c/a25853c9feea7bbf31d157ff6e004d2d3b4f7f13
- web https://git.kernel.org/stable/c/bc9843c39f9932a8b36efd1d362ea00bb88e4e78
- web https://git.kernel.org/stable/c/c5cedee5d97382176573bbe21e1724e737a5eb64
- web https://git.kernel.org/stable/c/d1bd8b9edc6752d10f84d28ff64f842401ce336d
- web https://nvd.nist.gov/vuln/detail/CVE-2026-23442
- web https://github.com/advisories/GHSA-prgg-rgfw-vr94