CVE-2026-64587
Vulnerability Scoring
Analysis In Progress
CVE-2026-64587 Vulnerability Analysis & Exploit Details
CVE-2026-64587
Attack Complexity Details
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Attack Complexity:
Attack Complexity Analysis In Progress
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Attack Vector:
Attack Vector Under Analysis
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Privileges Required:
None
No authentication is required for exploitation.
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Scope:
Impact is confined to the initially vulnerable component.
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User Interaction:
None
No user interaction is necessary for exploitation.
CVE-2026-64587 Details
Status: Received on 06 Aug 2026, 08:16 UTC
Published on: 06 Aug 2026, 08:16 UTC
CVSS Release:
CVE-2026-64587 Vulnerability Summary
CVE-2026-64587: In the Linux kernel, the following vulnerability has been resolved: net: ethernet: arc: emac: quiesce interrupts before requesting IRQ Normal RX/TX interrupts are enabled later, in arc_emac_open(), so probe should not see interrupt delivery in the usual case. However, hardware may still present stale or latched interrupt status left by firmware or the bootloader. If probe later unwinds after devm_request_irq() has installed the handler, such a stale interrupt can still reach arc_emac_intr() during teardown and race with release of the associated net_device. Avoid that window by putting the device into a known quiescent state before requesting the IRQ: disable all EMAC interrupt sources and clear any pending EMAC interrupt status bits. This keeps the change hardware-focused and minimal, while preventing spurious IRQ delivery from leftover state.
Assessing the Risk of CVE-2026-64587
Access Complexity Graph
The exploitability of CVE-2026-64587 depends on two key factors: attack complexity (the level of effort required to execute an exploit) and privileges required (the access level an attacker needs).
Exploitability Analysis for CVE-2026-64587
No exploitability data is available for CVE-2026-64587.
Understanding AC and PR
A lower complexity and fewer privilege requirements make exploitation easier. Security teams should evaluate these aspects to determine the urgency of mitigation strategies, such as patch management and access control policies.
Attack Complexity (AC) measures the difficulty in executing an exploit. A high AC means that specific conditions must be met, making an attack more challenging, while a low AC means the vulnerability can be exploited with minimal effort.
Privileges Required (PR) determine the level of system access necessary for an attack. Vulnerabilities requiring no privileges are more accessible to attackers, whereas high privilege requirements limit exploitation to authorized users with elevated access.
CVSS Score Breakdown Chart
Above is the CVSS Sub-score Breakdown for CVE-2026-64587, illustrating how Base, Impact, and Exploitability factors combine to form the overall severity rating. A higher sub-score typically indicates a more severe or easier-to-exploit vulnerability.
CIA Impact Analysis
Below is the Impact Analysis for CVE-2026-64587, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.
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Confidentiality:
None
CVE-2026-64587 does not compromise confidentiality.
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Integrity:
None
CVE-2026-64587 does not impact data integrity.
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Availability:
None
CVE-2026-64587 does not affect system availability.
CVE-2026-64587 References
External References
- https://git.kernel.org/stable/c/2503d08f8a2de618e5c3a8183b250ff4a2e2d52c
- https://git.kernel.org/stable/c/5f29dd540fe5ea3c826fc8ec759ba488b31f9707
- https://git.kernel.org/stable/c/6fc7449773748c7b904235a09a67054d78ab1172
- https://git.kernel.org/stable/c/81431da777924dddaefa5c9b0ca9da4a93f9df96
- https://git.kernel.org/stable/c/8efd5dcd31e22a9308b16b107a052fcd568c0a99
- https://git.kernel.org/stable/c/8f9adb3605e36f75639de529bb3d66e94194a388
- https://git.kernel.org/stable/c/abd338da658d7faa8e26cfefc8f83f0066707564
- https://git.kernel.org/stable/c/d0f2386f529807826e7404d40a245ee428f89f62
CWE Common Weakness Enumeration
Unknown
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