CVE-2025-39682

KEV の『悪用』には未遂(脆弱でない環境やハニーポットでの試行)が含まれ、特定の組織が侵害されたことを意味しない。

KEV の登録内容

vulnerabilityName: Linux Kernel Improper Check for Unusual or Exceptional Conditions Vulnerability
vendorProject: Linux
product: Kernel
dateAdded: 2026-09-18
shortDescription: Linux Kernel contains an improper check for unusual or exceptional conditions vulnerability in the TLS receive path which allows a zero-length record retrieved from the rx_list to bypass the intended recvmsg() record-type handling, potentially causing subsequent TLS records to be processed using incorrect zero-copy and queuing assumptions. The impacted product(s) could be end-of-life (EoL) and/or end-of-service (EoS). Users are advised to discontinue use and/or transition to a supported version.
requiredAction: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
dueDate: 2026-09-21
knownRansomwareCampaignUse: Unknown
forensicTriage: Yes
notes: This vulnerability affects an open-source component, third-party library, protocol, or proprietary implementation that could be used by different products. For more information, please see: ; https://git.kernel.org/stable/c/2902c3ebcca52ca845c03182000e8d71d3a5196f; https://git.kernel.org/stable/c/c09dd3773b5950e9cfb6c9b9a5f6e36d06c62677; https://git.kernel.org/stable/c/3439c15ae91a517cf3c650ea15a8987699416ad9; https://git.kernel.org/stable/c/29c0ce3c8cdb6dc5d61139c937f34cb888a6f42e; https://git.kernel.org/stable/c/62708b9452f8eb77513115b17c4f8d1a22ebf843 ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2025-39682
cwes: CWE-754

初めて観測: 2026-10-02T21:06:48Z / 最後に観測: 2026-10-02T21:06:48Z(last_observed_at。値の変更を最後に確認した時刻)

観測した変更

取り込み開始以降、KEV の値の変更は観測していません。

CVE レコード(CVE Program)

state: PUBLISHED
datePublished: 2025-09-05T17:20:48.657Z
dateUpdated: 2026-09-19T03:56:24.457Z

CNA の affected

Linux Linux (84c61fe1a75b4255df1e1e7c054c9e6d048da417 〜 <2902c3ebcca52ca845c03182000e8d71d3a5196f; 84c61fe1a75b4255df1e1e7c054c9e6d048da417 〜 <c09dd3773b5950e9cfb6c9b9a5f6e36d06c62677; 84c61fe1a75b4255df1e1e7c054c9e6d048da417 〜 <3439c15ae91a517cf3c650ea15a8987699416ad9; 84c61fe1a75b4255df1e1e7c054c9e6d048da417 〜 <29c0ce3c8cdb6dc5d61139c937f34cb888a6f42e; 84c61fe1a75b4255df1e1e7c054c9e6d048da417 〜 <62708b9452f8eb77513115b17c4f8d1a22ebf843)
Linux Linux (6.0; 0 〜 <6.0 (unaffected); 6.1.149 〜 <=6.1.* (unaffected); 6.6.103 〜 <=6.6.* (unaffected); 6.12.44 〜 <=6.12.* (unaffected); 6.16.4 〜 <=6.16.* (unaffected); 6.17 〜 <=* (unaffected))

KEV と CNA で製品の表記が異なる。KEV の vendorProject・product と CNA の affected が、大文字小文字を無視した包含で一致しなかった(機械的な照合で、どちらが正しいかは判定していない)。

外部のページ

出典: CISA Known Exploited Vulnerabilities Catalog(CISA KEV。CC0 1.0)。詳しくは出典表記とライセンス。

出典: CVE Program(CVE レコード)。詳しくは出典表記とライセンス。

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