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CVE-2026-31449
high
CVSS 7.8
Out-of-Bounds Read in linux (CVE-2026-31449)
Summary
vulnerability in linux (CVE-2026-31449). Successful exploitation can lead to full system takeover.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-31449** 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-2026-31449" on the vendor's site.
CVE-2026-31449 (linux) — CWE-125 / CVSS v3 7.8
Attack vector: local / unauthenticated
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
**out-of-bounds read** (CWE-125) 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
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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/01bf1e0b997d82c0e353b51ed74ef99698043c33
- web https://git.kernel.org/stable/c/2acb5c12ebd860f30e4faf67e6cc8c44ddfe5fe8
- web https://git.kernel.org/stable/c/407c944f217c17d4343148011acafebc604d55e1
- web https://git.kernel.org/stable/c/4d08401aa13f1531216f1a7ae281ca4806e90a5c
- web https://git.kernel.org/stable/c/93f2e975ed658ce09db4d4c2877ca2c06540df83
- web https://nvd.nist.gov/vuln/detail/CVE-2026-31449
- web https://github.com/advisories/GHSA-rq43-8p3g-5cc4
- web https://git.kernel.org/stable/c/10242e640b36b91ad03d25f3dc77854bbdff8358
- web https://git.kernel.org/stable/c/39d6e2b67651614bac0dc6592fa9836321910067
- web https://git.kernel.org/stable/c/c5839b34704c9c2f47f079451bdbb22de0da1ed1