CVE-2024-45775

Grub2: commands/extcmd: missing check for failed allocation

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.

Remediation

Workaround:

  • Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

Category

5.2
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.03%
Vendor Advisory redhat.com
Affected: Red Hat Red Hat Enterprise Linux 9
Affected: Red Hat Red Hat Enterprise Linux 10
Affected: Red Hat Red Hat Enterprise Linux 7
Affected: Red Hat Red Hat Enterprise Linux 8
Affected: Red Hat Red Hat OpenShift Container Platform 4
Published at:
Updated at:

References

Link Tags
https://access.redhat.com/errata/RHSA-2025:6990 vendor advisory
https://access.redhat.com/security/cve/CVE-2024-45775 vdb entry
https://bugzilla.redhat.com/show_bug.cgi?id=2337481 issue tracking

Frequently Asked Questions

What is the severity of CVE-2024-45775?
CVE-2024-45775 has been scored as a medium severity vulnerability.
How to fix CVE-2024-45775?
As a workaround for remediating CVE-2024-45775: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Is CVE-2024-45775 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2024-45775 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2024-45775?
CVE-2024-45775 affects Red Hat Red Hat Enterprise Linux 9, Red Hat Red Hat Enterprise Linux 10, Red Hat Red Hat Enterprise Linux 7, Red Hat Red Hat Enterprise Linux 8, Red Hat Red Hat OpenShift Container Platform 4.
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