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CVE-2025-38236
high
CVSS 7.8
Use-After-Free in c (CVE-2025-38236)
Summary
vulnerability in c (CVE-2025-38236). Successful exploitation can lead to full system takeover.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2025-38236** has been found in c.
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 "c CVE-2025-38236" on the vendor's site.
CVE-2025-38236 (c) — 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 c.
📍 Affected scope
c — .
🔥 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 'c' .` 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 'c' . | 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 `c` 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/32ca245464e1479bfea8592b9db227fdc1641705
- web https://git.kernel.org/stable/c/523edfed4f68b7794d85b9ac828c5f8f4442e4c5
- web https://git.kernel.org/stable/c/61a9ad7b69ce688697e5f63332f03e17725353bc
- web https://git.kernel.org/stable/c/8db4d2d026e6e3649832bfe23b96c4acff0756db
- web https://git.kernel.org/stable/c/a12237865b48a73183df252029ff5065d73d305e
- web https://git.kernel.org/stable/c/fad0a2c16062ac7c606b93166a7ce9d265bab976
- web https://project-zero.issues.chromium.org/issues/423023990
- web https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
- web https://cert-portal.siemens.com/productcert/html/ssa-082556.html
- web https://nvd.nist.gov/vuln/detail/CVE-2025-38236
- web https://github.com/advisories/GHSA-wqm2-9j5j-vxv3