In the Linux kernel, the following vulnerability has been resolved: nfsd: call cache_put if xdr_reserve_space returns NULL If not enough buffer space available, but idmap_lookup has triggered lookup_fn which calls cache_get and returns successfully. Then we missed to call cache_put here which pairs with cache_get. Reviwed-by: Jeff Layton <[email protected]>
En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: nfsd: llamar a cache_put si xdr_reserve_space devuelve NULL Si no hay suficiente espacio de búfer disponible, pero idmap_lookup ha activado lookup_fn que llama a cache_get y devuelve correctamente. Entonces, nos olvidamos de llamar a cache_put aquí, que se empareja con cache_get. Revisado por: Jeff Layton
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
| Attack Vector | LOCAL |
|---|---|
| Attack Complexity | LOW |
| Privileges Required | LOW |
| User Interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality Impact | NONE |
| Integrity Impact | NONE |
| Availability Impact | HIGH |
| Source | Type | Description |
|---|---|---|
| [email protected] | Primary |
en
CWE-476
|
| Vendor | Product | Version | Update | Type |
|---|---|---|---|---|
| linux | linux_kernel | * | <built-in method update of dict object at 0x7fd36b1c9240> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x7fd3846b1a80> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x7fd39c2a6380> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x7fd3406e30c0> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x7fd36b1c8540> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x7fd36a685bc0> | Operating System |
| Vulnerable | CPE |
|---|---|
| Yes | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |