Bug 2395670 (CVE-2023-53266)

Summary: CVE-2023-53266 kernel: arm64: acpi: Fix possible memory leak of ffh_ctxt
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Version: unspecifiedKeywords: Security
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OS: Linux   
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Description OSIDB Bzimport 2025-09-16 09:02:22 UTC 
In the Linux kernel, the following vulnerability has been resolved:

arm64: acpi: Fix possible memory leak of ffh_ctxt

Allocated 'ffh_ctxt' memory leak is possible if the SMCCC version
and conduit checks fail and -EOPNOTSUPP is returned without freeing the
allocated memory.

Fix the same by moving the allocation after the SMCCC version and
conduit checks.
Comment 1 Keith Grant 2025-09-16 13:51:41 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025091602-CVE-2023-53266-f945@gregkh/T