CVE-2026-15890 AEAD nonce reuse in Zephyr secure_storage ITS default nonce provider due to missing thread synchronization

The default AEAD nonce provider for the PSA Internal Trusted Storage transform module, securestorageitstransformaeadgetnonce in subsys/securestorage/src/its/transform/aeadget.c, stores its nonce counter in unsynchronized function-local static variables snonce and snonceinitialized. Every ITS writ...

CVE-2026-15890 AEAD nonce reuse in Zephyr secure_storage ITS default nonce provider due to missing thread synchronization

The default AEAD nonce provider for the PSA Internal Trusted Storage transform module, securestorageitstransformaeadgetnonce in subsys/securestorage/src/its/transform/aeadget.c, stores its nonce counter in unsynchronized function-local static variables snonce and snonceinitialized. Every ITS writ...

CVE-2026-15890

CVE-2026-15890 affects the Zephyr RTOS PSA Internal Trusted Storage (ITS) transform module. The default AEAD nonce provider (secure_storage_its_transform_aead_get_nonce) stores its nonce counter in unsynchronized function-local static variables. Two concurrent threads writing the same entry UID c...

@hpke/core reuses AEAD nonces

Summary The public SenderContext Seal API has a race condition which allows for the same AEAD nonce to be re-used for multiple Seal calls. This can lead to complete loss of Confidentiality and Integrity of the produced messages. Details The SenderContext Seal implementation allows for concurrent...