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CVE-2026-46301
high
CVSS 7.8
Use-After-Free in linux (CVE-2026-46301)
Summary
vulnerability in linux (CVE-2026-46301). Successful exploitation can lead to full system takeover.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-46301** 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-2026-46301" on the vendor's site.
CVE-2026-46301 (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。
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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/0e8e57f9737ea257634db1d152fc430a0788a3e1
- web https://git.kernel.org/stable/c/36e58c436d2c2a797800427dc04d74ffd8b6ce1c
- web https://git.kernel.org/stable/c/43334836b907adc21eab3079d2e6b26754468786
- web https://git.kernel.org/stable/c/4ca90deeca1c7dd72c1c380ba8143565516def2d
- web https://git.kernel.org/stable/c/8822980668c96b5aa251c1e2daec1873262b8f3f
- web https://git.kernel.org/stable/c/9d72732fe70c11424bc90ed466c7ccfa58b42a9a
- web https://git.kernel.org/stable/c/d50ef3553acbacce6f2843304d41d06dca358bb6
- web https://git.kernel.org/stable/c/d79e92161b65832e0b8cad5f3d84d17e5cd7a970
- web https://nvd.nist.gov/vuln/detail/CVE-2026-46301
- web https://github.com/advisories/GHSA-fg92-r9x5-ch82