HIGH 7.8 Microsoft
CVE-2026-23231
netfilter: nf_tables: fix use-after-free in nf_tables_addchain()
Microsoft Security Update 2026-Mar: netfilter: nf_tables: fix use-after-free in nf_tables_addchain()
Affected Products
- cbl2 kernel 5.15.200.1-1 on CBL Mariner 2.0
- cbl2 kernel 5.15.202.1-1 on CBL Mariner 2.0
- azl3 kernel 6.6.126.1-1 on Azure Linux 3.0
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-23231
- https://nvd.nist.gov/vuln/detail/CVE-2026-23231
This high severity vulnerability with a CVSS score of 7.8 was published on 2026-03-10 via Microsoft. Affected: cbl2 kernel 5.15.200.1-1 on CBL Mariner 2.0, cbl2 kernel 5.15.202.1-1 on CBL Mariner 2.0, azl3 kernel 6.6.126.1-1 on Azure Linux 3.0.
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