CVE-2021-22555
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 Heap Out-of-Bounds Write Vulnerability
- vendorProject
- Linux
- product
- Kernel
- dateAdded
- 2025-10-06
- shortDescription
- Linux Kernel contains a heap out-of-bounds write vulnerability that could allow an attacker to gain privileges or cause a DoS (via heap memory corruption) through user name space.
- requiredAction
- Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- dueDate
- 2025-10-27
- knownRansomwareCampaignUse
- Unknown
- forensicTriage
- No
- notes
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/net/netfilter/x_tables.c?id=9fa492cdc160cd27ce1046cb36f47d3b2b1efa21 ; https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/net/netfilter/x_tables.c?id=b29c457a6511435960115c0f548c4360d5f4801d ; https://security.netapp.com/advisory/ntap-20210805-0010/ ; https://github.com/google/security-research/security/advisories/GHSA-xxx5-8mvq-3528 ; https://nvd.nist.gov/vuln/detail/CVE-2021-22555
- cwes
- CWE-787
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)
CVE レコードはまだ取り込んでいません(CVE Program に未公開の場合は CVE 未公開)。
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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