Bug 2334465 (CVE-2024-56573)

Summary: CVE-2024-56573 kernel: efi/libstub: Free correct pointer on failure
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
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Version: unspecifiedCC: dfreiber, drow, jburrell, vkumar
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Hardware: All   
OS: Linux   
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Description OSIDB Bzimport 2024-12-27 15:03:51 UTC 
In the Linux kernel, the following vulnerability has been resolved:

efi/libstub: Free correct pointer on failure

cmdline_ptr is an out parameter, which is not allocated by the function
itself, and likely points into the caller's stack.

cmdline refers to the pool allocation that should be freed when cleaning
up after a failure, so pass this instead to free_pool().
Comment 1 Avinash Hanwate 2024-12-28 07:13:19 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024122717-CVE-2024-56573-f5d2@gregkh/T