← Back
CVE-2026-31597
high
CVSS 7.8
Use-After-Free in c (CVE-2026-31597)
Summary
vulnerability in c (CVE-2026-31597). Successful exploitation can lead to full system takeover.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-31597** 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-2026-31597" on the vendor's site.
CVE-2026-31597 (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/35c2c05261d6f6d84aaa1355afa201d507943e76
- web https://git.kernel.org/stable/c/36539c4d536f851a3b346a6ebb27b51bc3d77a94
- web https://git.kernel.org/stable/c/3f5e74b5db9353b01ed50f4de84e75b755f8fbc2
- web https://git.kernel.org/stable/c/4cf2768a0291a0cdd0dae801ea0eafa3878a349d
- web https://git.kernel.org/stable/c/6f072daefcab1d84ce37c073645615f63be91006
- web https://git.kernel.org/stable/c/76a602fdbb78dd05b2da06f74a988cebc97e82d0
- web https://git.kernel.org/stable/c/7de554cabf160e331e4442e2a9ad874ca9875921
- web https://git.kernel.org/stable/c/925bf22c1b823e231b1baea761fe8a1512e442f2
- web https://git.kernel.org/stable/c/d45ff441b416d4aa1af72b1db23d959601c04da2
- web https://nvd.nist.gov/vuln/detail/CVE-2026-31597
- web https://github.com/advisories/GHSA-8pwc-q4rq-xxf3