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CVE-2024-50281

Estado: ModificadaMedia (5.5)—

In the Linux kernel, the following vulnerability has been resolved:

KEYS: trusted: dcp: fix NULL dereference in AEAD crypto operation

When sealing or unsealing a key blob we currently do not wait for the AEAD cipher operation to finish and simply return after submitting the request. If there is some load on the system we can exit before the cipher operation is done and the buffer we read from/write to is already removed from the stack. This will e.g. result in NULL pointer dereference errors in the DCP driver during blob creation.

Fix this by waiting for the AEAD cipher operation to finish before resuming the seal and unseal calls.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

Referencias

JSON original (NVD)

Mostrar
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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKEYS: trusted: dcp: fix NULL dereference in AEAD crypto operation\n\nWhen sealing or unsealing a key blob we currently do not wait for\nthe AEAD cipher operation to finish and simply return after submitting\nthe request. If there is some load on the system we can exit before\nthe cipher operation is done and the buffer we read from/write to\nis already removed from the stack. This will e.g. result in NULL\npointer dereference errors in the DCP driver during blob creation.\n\nFix this by waiting for the AEAD cipher operation to finish before\nresuming the seal and unseal calls."
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      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: KEYS: trusted: dcp: fix NULL dereference in AEAD cryptooperation Al sellar o desellar un blob de claves, actualmente no esperamos a que finalice la operación de cifrado AEAD y simplemente regresamos después de enviar la solicitud. Si hay alguna carga en el sistema, podemos salir antes de que finalice la operación de cifrado y el búfer desde el que leemos/escribimos ya se eliminó de la pila. Esto, por ejemplo, dará como resultado errores de desreferencia de puntero NULL en el controlador DCP durante la creación del blob. Solucione esto esperando a que finalice la operación de cifrado AEAD antes de reanudar las llamadas de sellado y dessellado."
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