In the Linux kernel, the following vulnerability has been resolved: ubifs: skip dumping tnc tree when zroot is null Clearing slab cache will free all znode in memory and make c->zroot.znode = NULL, then dumping tnc tree will access c->zroot.znode which cause null pointer dereference.
En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ubifs: omite el volcado del árbol tnc cuando zroot es nulo. Limpiar el caché de slab liberará todos los znode en la memoria y hará que c->zroot.znode = NULL, luego, al volcar el árbol tnc se accederá a c->zroot.znode, lo que provocará una desreferencia del puntero nulo.
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
|
| 134c704f-9b21-4f2e-91b3-4a467353bcc0 | Secondary |
en
CWE-476
|
| Vendor | Product | Version | Update | Type |
|---|---|---|---|---|
| linux | linux_kernel | * | <built-in method update of dict object at 0x702bdcc98a40> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x702bdd7f9480> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x702bdc5c6140> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x702b50624a40> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x702bdcc9af40> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x702bdcc98cc0> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x702bde4f1c40> | 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:*:*:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |