What’s Vulnerable › Vulnerabilities

CVE-2024-45775: Grub2: commands/extcmd: missing check for failed allocation

• Severity: medium (CVSS 5.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-02-18 · updated 2026-10-21
• Weakness: CWE-252

Description

A flaw was found in grub2 where the grub_extcmd_dispatcher() function calls grub_arg_list_alloc() to allocate memory for the grub's argument list. However, it fails to check in case the memory allocation fails. Once the allocation fails, a NULL point will be processed by the parse_option() function, leading grub to crash or, in some rare scenarios, corrupt the IVT data.

Affected products

• Red Hat OpenShift Container Platform 4.18: all versions
• Red Hat Enterprise Linux 7: all versions
• Red Hat Enterprise Linux 8: all versions
• Red Hat Enterprise Linux 9: all versions — fixed in 1:2.06-104.el9_6

How to fix

Upgrade to a fixed version: Red Hat Enterprise Linux 9 1:2.06-104.el9_6. Check the vendor advisory for mitigations.

References

• https://access.redhat.com/errata/RHSA-2025:6990
• https://access.redhat.com/security/cve/CVE-2024-45775
• https://bugzilla.redhat.com/show_bug.cgi?id=2337481

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