In the Linux kernel, the following vulnerability has been resolved: Squashfs: check metadata block offset is within range Syzkaller reports a "general protection fault in squashfs_copy_data" This is ultimately caused by a corrupted index look-up table, which produces a negative metadata block offset. This is subsequently passed to squashfs_copy_data (via squashfs_read_metadata) where the negative offset causes an out of bounds access. The fix is to check that the offset is within range in squashfs_read_metadata. This will trap this and other cases.
En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta: Squashfs: comprobar que el desplazamiento del bloque de metadatos está dentro del rango Syzkaller informa de un 'fallo de protección general en squashfs_copy_data' Esto es causado en última instancia por una tabla de búsqueda de índices corrupta, que produce un desplazamiento de bloque de metadatos negativo. Esto se pasa posteriormente a squashfs_copy_data (a través de squashfs_read_metadata) donde el desplazamiento negativo causa un acceso fuera de límites. La solución es comprobar que el desplazamiento está dentro del rango en squashfs_read_metadata. Esto atrapará este y otros casos.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
| Attack Vector | LOCAL |
|---|---|
| Attack Complexity | LOW |
| Privileges Required | LOW |
| User Interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality Impact | HIGH |
| Integrity Impact | NONE |
| Availability Impact | HIGH |
| Source | Type | Description |
|---|---|---|
| [email protected] | Primary |
en
CWE-125
|
| Vendor | Product | Version | Update | Type |
|---|---|---|---|---|
| linux | linux_kernel | * | <built-in method update of dict object at 0x7fd31b20da40> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x7fd36041bf00> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x7fd385054100> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x7fd3685306c0> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x7fd31b20d940> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x7fd31b20f400> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x7fd360418dc0> | Operating System |
| linux | linux_kernel | 2.6.29 | <built-in method update of dict object at 0x7fd360418980> | Operating System |
| linux | linux_kernel | 7.0 | <built-in method update of dict object at 0x7fd36041bd40> | Operating System |
| linux | linux_kernel | 7.0 | <built-in method update of dict object at 0x7fd31b20e280> | Operating System |
| linux | linux_kernel | 7.0 | <built-in method update of dict object at 0x7fd360418f00> | Operating System |
| linux | linux_kernel | 7.0 | <built-in method update of dict object at 0x7fd36041a440> | Operating System |
| linux | linux_kernel | 7.0 | <built-in method update of dict object at 0x7fd36943a400> | Operating System |
| linux | linux_kernel | 7.0 | <built-in method update of dict object at 0x7fd34019c0c0> | Operating System |
| linux | linux_kernel | 7.0 | <built-in method update of dict object at 0x7fd3685302c0> | 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:*:*:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:2.6.29:-:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:7.0:rc7:*:*:*:*:*:* |