HIGH 7.1 Microsoft

CVE-2026-31649

net: stmmac: fix integer underflow in chain mode

Microsoft Security Update 2026-Apr: net: stmmac: fix integer underflow in chain mode

Affected Products

cbl2 kernel 5.15.202.1-1 on CBL Mariner 2.0
azl3 kernel 6.6.134.1-2 on Azure Linux 3.0
azl3 kernel 6.6.130.1-3 on Azure Linux 3.0

Remediation

$ sudo apt install --only-upgrade linux-kernel

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-31649
https://nvd.nist.gov/vuln/detail/CVE-2026-31649

Published: 2026-04-14 · Source: Microsoft · Feed updated: 2026-08-04

This high severity vulnerability with a CVSS score of 7.1 was published on 2026-04-14 via Microsoft. A remediation command is available below. Affected: cbl2 kernel 5.15.202.1-1 on CBL Mariner 2.0, azl3 kernel 6.6.134.1-2 on Azure Linux 3.0, azl3 kernel 6.6.130.1-3 on Azure Linux 3.0.

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