A flaw was found in grub2 where the grub_extcmd_dispatcher() function calls grub_arg_list_alloc() to allocate memory for the grubs 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 product does not check the return value from a method or function, which can prevent it from detecting unexpected states and conditions.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Grub2 | Ubuntu | esm-infra-legacy/trusty | * |
| Grub2-signed | Ubuntu | esm-infra-legacy/trusty | * |