CVE-2026-64015
Gravedad CVSS v3.1:
ALTA
Tipo:
No Disponible / Otro tipo
Fecha de publicación:
19/07/2026
Última modificación:
30/07/2026
Descripción
*** Pendiente de traducción *** In the Linux kernel, the following vulnerability has been resolved:<br />
<br />
security/keys: fix missed RCU read section on lookup<br />
<br />
Nicholas Carlini reports that the keyring code calls assoc_array_find()<br />
in find_key_to_update() without holding the RCU read lock, while the<br />
assoc_array_gc() code really is designed around removing the node from<br />
the tree and then freeing it after an RCU grace-period.<br />
<br />
The regular key handling doesn&#39;t see this because holding the keyring<br />
semaphore hides any lifetime issues, but the persistent key handling<br />
uses a different model.<br />
<br />
Instead of extending the keyring locking, just do the simple RCU locking<br />
that the assoc_array was designed for.
Impacto
Puntuación base 3.x
7.80
Gravedad 3.x
ALTA
Referencias a soluciones, herramientas e información
- https://git.kernel.org/stable/c/43a1e3744548e6fd85873e6fb43e293eb4010694
- https://git.kernel.org/stable/c/4c5d407ba3ff7f30561ff73ba1b07ed70c864edc
- https://git.kernel.org/stable/c/50bb3435a5e627bfbdc52eb4536f49f88b3486b8
- https://git.kernel.org/stable/c/5659e6923cb72f8e18e8b539109ab512455fe195
- https://git.kernel.org/stable/c/66288dcadf80974436250e9f70ed848836b835b5
- https://git.kernel.org/stable/c/cefa4265b11176c897a7d9e8e54d89e3701c5584



