Bug 2432366 (CVE-2025-71147)

Summary: CVE-2025-71147 kernel: Linux kernel: Denial of Service due to memory leak in tpm2_load_cmd
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
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Priority: medium    
Version: unspecifiedKeywords: Security
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OS: Linux   
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A flaw was found in the Linux kernel's trusted keys subsystem. A local user could exploit a memory leak in the `tpm2_load_cmd` function, which fails to free a temporary memory allocation in certain error scenarios. This memory leak could lead to a system-wide Denial of Service (DoS) by exhausting available memory resources.
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Description OSIDB Bzimport 2026-01-23 15:02:48 UTC 
In the Linux kernel, the following vulnerability has been resolved:

KEYS: trusted: Fix a memory leak in tpm2_load_cmd

'tpm2_load_cmd' allocates a tempoary blob indirectly via 'tpm2_key_decode'
but it is not freed in the failure paths. Address this by wrapping the blob
into with a cleanup helper.
Comment 1 Keith Grant 2026-01-23 17:56:47 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026012327-CVE-2025-71147-a296@gregkh/T