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CVE-2026-23157
medium
CVSS 5.5
Vulnerability in linux (CVE-2026-23157)
Summary
vulnerability in linux (CVE-2026-23157). Risk of unauthorized operations or information disclosure.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-23157** 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-2026-23157" on the vendor's site.
CVE-2026-23157 (linux) — CWE-667 / 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-667) 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/0c3666ec188640c20e254011e7adf4464c32ee58
- web https://git.kernel.org/stable/c/4357e02cafabe01c2d737ceb4c4c6382fc2ee10a
- web https://git.kernel.org/stable/c/4e159150a9a56d66d247f4b5510bed46fe58aa1c
- web https://git.kernel.org/stable/c/629666d20c7dcd740e193ec0631fdff035b1f7d6
- web https://git.kernel.org/stable/c/6a8b6242eaa1dd7a0de2d6de6420d10ffe68db90
- web https://git.kernel.org/stable/c/bb9be3f713652e330df00f3724c18c7a5469e7ac
- web https://nvd.nist.gov/vuln/detail/CVE-2026-23157
- web https://github.com/advisories/GHSA-pw2v-cmfh-x2p3