HIGH 7.8 Microsoft
CVE-2026-31483
s390/syscalls: Add spectre boundary for syscall dispatch table
Microsoft Security Update 2026-Apr: s390/syscalls: Add spectre boundary for syscall dispatch table
Affected Products
- azl3 kernel 6.6.130.1-3 on Azure Linux 3.0
- cbl2 kernel 5.15.202.1-1 on CBL Mariner 2.0
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-31483
- https://nvd.nist.gov/vuln/detail/CVE-2026-31483
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, cbl2 kernel 5.15.202.1-1 on CBL Mariner 2.0.
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