CVE-2026-74566
Gravedad:
Pendiente de análisis
Tipo:
No Disponible / Otro tipo
Fecha de publicación:
15/08/2026
Última modificación:
15/08/2026
Descripción
*** Pendiente de traducción *** In the Linux kernel, the following vulnerability has been resolved:<br />
<br />
keys: make keyring key-chunk byte order agree with keyring_diff_objects()<br />
<br />
keyring_get_key_chunk() loads description bytes into the index chunk low<br />
address first, while keyring_diff_objects() numbers the first differing<br />
bit from the low end and folds the absolute byte index into the level<br />
without removing the inline-prefix offset the level already carries.<br />
The two disagree on byte order and bit position, so the array can be<br />
told two keys first differ at a bit that does not differ in the chunk<br />
the walker uses, letting crafted descriptions collide into one node.<br />
<br />
Load the chunk in the order keyring_diff_objects() assumes and drop the<br />
inline-prefix length when folding the byte index into the level. This<br />
only changes the in-memory ordering used to place keys within a keyring;<br />
add, search and read of non-colliding keys are unaffected.
Impacto
Referencias a soluciones, herramientas e información
- https://git.kernel.org/stable/c/3d9f16c0b643ceac305526b2e2fe25c2c6166926
- https://git.kernel.org/stable/c/58565eef0f8d861aae92abfb7658458d661cee17
- https://git.kernel.org/stable/c/7269df3e7fcfa308e6a456305162f7788747bdbd
- https://git.kernel.org/stable/c/7e5397a3fed0dee7779bd084bec3c0584db3c930
- https://git.kernel.org/stable/c/bd0f976ef89dce6db458bf75bc2cf51127becc41



