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CVE-2026-64241 medium CVSS 5.5

Vulnerability in Linux kernel (CVE-2026-64241)

Summary

Vulnerability in Linux kernel (CVE-2026-64241). Risk of unauthorized operations or information disclosure.

Original description

The description as published by the source.

In the Linux kernel, the following vulnerability has been resolved:

gpio: rockchip: teardown bugs and resource leaks

Address several teardown issues and resource leaks in the driver's remove
path and error handling:

  1. Debounce clock reference leak: The debounce clock (bank->db_clk) is
    obtained using of_clk_get() which increments the clock's reference
    count, but clk_put() is never called. Register a devm action to
    cleanly release it on unbind. Note that of_clk_get(..., 1) remains
    necessary over devm_clk_get() because the DT binding does not define
    clock-names, precluding name-based lookup.

  2. Unregistered chained IRQ handler: The chained IRQ handler is not
    disconnected in remove(). If a stray interrupt fires after the driver
    is removed, the kernel attempts to execute a stale handler, leading
    to a panic. Fix this by clearing the handler in remove().

  3. IRQ domain leak: The linear IRQ domain and its generic chips are
    allocated manually during probe but never removed. Remove the IRQ
    domain during driver teardown to free the associated generic chips
    and mappings.

[Bartosz: don't emit an error message on devres allocation failure]

Source: NIST National Vulnerability Database NVD GitHub Advisory

Auto-generated summary

Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.

A vulnerability tracked as CVE-2026-64241 has been found in Linux kernel.
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 kernel CVE-2026-64241" on the vendor's site.

CVE-2026-64241 (Linux kernel) — CWE-401 / 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-401) exists in Linux kernel.

📍 Affected scope

Check the vendor advisory for the affected versions of Linux kernel.

🔥 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. Audit SBOM/dependencies to find affected services.

Response actions

Concrete steps and command examples for SOC/SRE teams to execute in order

  1. 1
    Identify exposure identify 
    Audit SBOM/dependencies for affected components.

    資産台帳・SBOM・依存マニフェストで Linux kernel を使っているサービスとバージョンを洗い出す。

  2. 2
    Post-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。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。

Affected packages

Linux Kernel
[{"type":"ECOSYSTEM","events":[{"introduced":"5.15.0"},{"fixed":"6.12.96"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.35"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.0.12"}]}]

Fix status by distribution

Fixed packages published by each distribution for this CVE

References

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