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CVE-2026-53254
high
CVSS 8.1
Out-of-Bounds Read in linux (CVE-2026-53254)
Summary
vulnerability in linux (CVE-2026-53254). Confidential information can be exposed externally.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-53254** has been found in linux.
Confidential information can be exposed externally. CVSS score: 8.1/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "linux CVE-2026-53254" on the vendor's site.
CVE-2026-53254 (linux) — CWE-125 / CVSS v3 8.1
Attack vector: adjacent-network / unauthenticated / 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
**out-of-bounds read** (CWE-125) exists in linux.
📍 Affected scope
linux — .
🔥 Severity
Severity: High (CVSS 8.1/10). Confidential information can be exposed externally
🔧 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://nvd.nist.gov/vuln/detail/CVE-2026-53254
- web https://git.kernel.org/stable/c/08b9c1fbe78f4ad3f6250c6541cfaabdbeb81997
- web https://git.kernel.org/stable/c/0d637136ce89f9a2309b2c3502402ce400dab0ef
- web https://git.kernel.org/stable/c/1b070ac9e99c2c2c3a8112943ca98ab6fca7f10c
- web https://git.kernel.org/stable/c/23882b828c3c8c51d0c946446a396b10abb3b16b
- web https://git.kernel.org/stable/c/3eabc6d47a0ad22b053329997aaf0ec1e581e392
- web https://git.kernel.org/stable/c/7c15c7c2878957cbfed93bcc29c13fdace464254
- web https://git.kernel.org/stable/c/98377e6b1a1a56561ec66a181573ea2b61b2079e
- web https://github.com/advisories/GHSA-v722-58f9-vcj4