MEDIUM 4.9 Microsoft
CVE-2025-61664
Grub2: missing unregister call for normal_exit command may lead to use-after-free
Microsoft Security Update 2025-Nov: Grub2: missing unregister call for normal_exit command may lead to use-after-free
Affected Products
- cbl2 grub2 2.06-15 on CBL Mariner 2.0
- azl3 grub2 2.06-25 on Azure Linux 3.0
- azl3 grub2 2.06-26 on Azure Linux 3.0
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-61664
- https://nvd.nist.gov/vuln/detail/CVE-2025-61664
This medium severity vulnerability with a CVSS score of 4.9 was published on 2025-11-11 via Microsoft. Affected: cbl2 grub2 2.06-15 on CBL Mariner 2.0, azl3 grub2 2.06-25 on Azure Linux 3.0, azl3 grub2 2.06-26 on Azure Linux 3.0.
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