MEDIUM 5.5 Microsoft
CVE-2025-21959
netfilter: nf_conncount: Fully initialize struct nf_conncount_tuple in insert_tree()
Microsoft Security Update 2025-Apr: netfilter: nf_conncount: Fully initialize struct nf_conncount_tuple in insert_tree()
Affected Products
- azl3 kernel 6.6.82.1-1 on Azure Linux 3.0
- cbl2 kernel 5.15.176.3-3 on CBL Mariner 2.0
- cbl2 kernel 5.15.176.3-3 on CBL-Mariner 2.0
- cbl2 kernel 5.15.180.1-1 on CBL Mariner 2.0
- azl3 kernel 6.6.85.1-2 on Azure Linux 3.0
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21959
- https://nvd.nist.gov/vuln/detail/CVE-2025-21959
This medium severity vulnerability with a CVSS score of 5.5 was published on 2025-04-08 via Microsoft. Affected: azl3 kernel 6.6.82.1-1 on Azure Linux 3.0, cbl2 kernel 5.15.176.3-3 on CBL Mariner 2.0, cbl2 kernel 5.15.176.3-3 on CBL-Mariner 2.0 and 2 more.
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