← Back
CVE-2026-31532
high
CVSS 7.8
Use-After-Free in linux (CVE-2026-31532)
Summary
vulnerability in linux (CVE-2026-31532). Successful exploitation can lead to full system takeover.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-31532** has been found in linux.
Successful exploitation can lead to full system takeover. CVSS score: 7.8/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "linux CVE-2026-31532" on the vendor's site.
CVE-2026-31532 (linux) — CWE-416 / CVSS v3 7.8
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
**use-after-free** (CWE-416) exists in linux.
📍 Affected scope
linux — .
🔥 Severity
Severity: High (CVSS 7.8/10). Successful exploitation can lead to full system takeover
🔧 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/1a0f2de81f7fbdc538fc72d7d74609b79bc83cc0
- web https://git.kernel.org/stable/c/1de30576a6dfeaaa27ef91fa272e6b9240b6fbd3
- web https://git.kernel.org/stable/c/34c1741254ff972e8375faf176678a248826fe3a
- web https://git.kernel.org/stable/c/3f43f12fde34737fba091b7e3ab391e14ddbb0be
- web https://git.kernel.org/stable/c/572f0bf536ebc14f6e7da3d21a85cf076de8358e
- web https://git.kernel.org/stable/c/5e9cfffad898bbeaafd0ea608a6d267362f050fc
- web https://git.kernel.org/stable/c/64c8553decf5a5f2417bd54761ea0a832c56c4ca
- web https://git.kernel.org/stable/c/7201a531b9a5ed892bfda5ded9194ef622de8ffa
- web https://git.kernel.org/stable/c/a535a9217ca3f2fccedaafb2fddb4c48f27d36dc
- web https://nvd.nist.gov/vuln/detail/CVE-2026-31532
- web https://github.com/advisories/GHSA-7w6x-pfmg-76xx