Bug 2337481 (CVE-2024-45775)

Summary: CVE-2024-45775 grub2: commands/extcmd: Missing check for failed allocation
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: jaredz, lsandova, mlewando, nfrayer, pjanda, pjones, security-response-team
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
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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.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Bug Depends On: 2346324, 2346321, 2346322, 2346323, 2346325    
Bug Blocks:    
Deadline: 2025-01-28   

Description OSIDB Bzimport 2025-01-13 23:11:03 UTC 
In grub_extcmd_dispatcher() function grub2 calls grub_arg_list_alloc() to allocate memory for the grub's argument list, however it misses to check in case the memory allocation failed. Once the allocation failed, a NULL point will be processed by the parse_option() function leading grub to crash or in some rare scenarios corrupt the IVT data.
Comment 4 errata-xmlrpc 2025-05-13 08:41:08 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2025:6990 https://access.redhat.com/errata/RHSA-2025:6990