HIGH 7.8 Microsoft
CVE-2026-31493
RDMA/efa: Fix use of completion ctx after free
Microsoft Security Update 2026-Apr: RDMA/efa: Fix use of completion ctx after free
Affected Products
- azl3 kernel 6.6.130.1-3 on Azure Linux 3.0
- azl3 kernel 6.6.134.1-2 on Azure Linux 3.0
- azl3 kernel 6.6.138.1-1 on Azure Linux 3.0
- azl3 kernel 6.6.144.1-1 on Azure Linux 3.0
- azl3 kernel 6.6.145.2-1 on Azure Linux 3.0
- cbl2 kernel 5.15.202.1-1 on CBL Mariner 2.0
- azl3 kernel 6.6.137.1-2 on Azure Linux 3.0
- azl3 kernel 6.6.139.1-1 on Azure Linux 3.0
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-31493
- https://nvd.nist.gov/vuln/detail/CVE-2026-31493
This high severity vulnerability with a CVSS score of 7.8 was published on 2026-04-14 via Microsoft. Affected: azl3 kernel 6.6.130.1-3 on Azure Linux 3.0, azl3 kernel 6.6.134.1-2 on Azure Linux 3.0, azl3 kernel 6.6.138.1-1 on Azure Linux 3.0 and 5 more.
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