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CVE-2026-43058
medium
CVSS 5.5
Vulnerability in linux (CVE-2026-43058)
Summary
vulnerability in linux (CVE-2026-43058). Risk of unauthorized operations or information disclosure.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-43058** has been found in linux.
Risk of unauthorized operations or information disclosure. CVSS score: 5.5/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "linux CVE-2026-43058" on the vendor's site.
CVE-2026-43058 (linux) — CWE-476 / CVSS v3 5.5
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
**A vulnerability** (CWE-476) exists in linux.
📍 Affected scope
linux — .
🔥 Severity
Severity: Medium (CVSS 5.5/10). Risk of unauthorized operations or information disclosure
🔧 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/1b2820c8a9887981634020db19f1a2425558b88e
- web https://git.kernel.org/stable/c/57b01d945ed68cebe486d495dadc4901a96d3aaa
- web https://git.kernel.org/stable/c/5f8e73bde67e931468bc2a1860d78d72f0c6ba41
- web https://git.kernel.org/stable/c/6d75a9ec5bdb8cf8382eaf8f8fe831ba7d58a9d4
- web https://git.kernel.org/stable/c/be57e52e27c7cbfb400a8f255e475cbcff242baa
- web https://git.kernel.org/stable/c/e3957eb26a3d570aefc6bb184fa8b8a1e9a4e508
- web https://git.kernel.org/stable/c/a73f84a30975e6c4ae06efd500d31c82564dba10
- web https://git.kernel.org/stable/c/a876d72ceba7fe5444005239f363c105767e0ecf
- web https://git.kernel.org/stable/c/c034d8094fee474eb94142c17643eee2919079b7
- web https://nvd.nist.gov/vuln/detail/CVE-2026-43058
- web https://github.com/advisories/GHSA-2xpr-gh65-3jvf