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CVE-2026-89763 - KEYS: trusted: Fix TPM teardown ordering

CVE ID : CVE-2026-89763 Published : Sept. 11, 2026, 8:20 p. m. • 32 minutes ago Description : In the Linux kernel, the following vulnerability has been resolved: KEYS: trusted: Fix TPM teardown ordering trusted_tpm_exit() drops the TPM chip reference and frees the digest array before unregistering the trusted key type. key_type_lookup() holds key_types_sem for reading until the key operation finishes, while unregister_key_type() takes it for writing. It therefore provides the synchronization point that must precede backend teardown. The current order permits this interleaving: CPU 0 CPU 1