Red Hat Enterprise Linux/OpenShift Container Platform grub2 grub_extcmd_dispatcher return value

Summaryinfo

A vulnerability categorized as problematic has been discovered in Red Hat Enterprise Linux and OpenShift Container Platform. Affected by this vulnerability is the function grub_extcmd_dispatcher of the component grub2. Executing a manipulation can lead to return value. The identification of this vulnerability is CVE-2024-45775. The attack can only be executed locally. There is no exploit available. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability classified as problematic was found in Red Hat Enterprise Linux and OpenShift Container Platform (affected version unknown). This vulnerability affects the function grub_extcmd_dispatcher of the component grub2. The manipulation with an unknown input leads to a return value vulnerability. The CWE definition for the vulnerability is CWE-252. The product does not check the return value from a method or function, which can prevent it from detecting unexpected states and conditions. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is shared for download at access.redhat.com. This vulnerability was named CVE-2024-45775 since 09/08/2024. The exploitation appears to be difficult. The attack needs to be approached locally. Additional levels of successful authentication are needed for exploitation. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 216508 (SUSE SLES15 Security Update : grub2 (SUSE-SU-2025:0588-1)), which helps to determine the existence of the flaw in a target environment.

Applying a patch is able to eliminate this problem.

The vulnerability is also documented in the databases at Tenable (216508), EUVD (EUVD-2025-4780) and CERT Bund (WID-SEC-2025-0396). Once again VulDB remains the best source for vulnerability data.

Affected

• Amazon Linux 2
• Red Hat Enterprise Linux
• SUSE Linux
• Oracle Linux
• SUSE openSUSE
• NetApp ActiveIQ Unified Manager
• Dell NetWorker
• Dell Avamar
• Open Source Grub
• Red Hat OpenShift
• IBM QRadar SIEM

Productinfo

Type

• Operating System

Vendor

• Red Hat

Name

• Enterprise Linux
• OpenShift Container Platform

License

• commercial

Website

• Vendor: https://www.redhat.com/

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Once again VulDB remains the best source for vulnerability data.

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