In the Linux kernel, the following vulnerability has been resolved: wifi: radiotap: reject radiotap with unknown bits The radiotap parser is currently only used with the radiotap namespace (not with vendor namespaces), but if the undefined field 18 is used, the alignment/size is unknown as well. In this case, iterator->_next_ns_data isn't initialized (it's only set for skipping vendor namespaces), and syzbot points out that we later compare against this uninitialized value. Fix this by moving the rejection of unknown radiotap fields down to after the in-namespace lookup, so it will really use iterator->_next_ns_data only for vendor namespaces, even in case undefined fields are present.
En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta: wifi: radiotap: rechazar radiotap con bits desconocidos El analizador de radiotap actualmente solo se utiliza con el espacio de nombres de radiotap (no con espacios de nombres de proveedor), pero si se utiliza el campo indefinido 18, la alineación/tamaño también es desconocido. En este caso, iterator->_next_ns_data no está inicializado (solo se establece para omitir espacios de nombres de proveedor), y syzbot señala que más tarde comparamos con este valor no inicializado. Esto se soluciona moviendo el rechazo de campos radiotap desconocidos a después de la búsqueda dentro del espacio de nombres, para que realmente utilice iterator->_next_ns_data solo para espacios de nombres de proveedor, incluso en caso de que haya campos indefinidos.
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
NVD-CWE-noinfo
|
| Vendor | Product | Version | Update | Type |
|---|---|---|---|---|
| linux | linux_kernel | * | <built-in method update of dict object at 0x7fd34bb9cbc0> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x7fd34082c2c0> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x7fd340a38e40> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x7fd36b855800> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x7fd34bb9cf40> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x7fd34bb9d4c0> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x7fd37033ef00> | Operating System |
| linux | linux_kernel | 2.6.34 | <built-in method update of dict object at 0x7fd3855c1e40> | Operating System |
| linux | linux_kernel | 7.0 | <built-in method update of dict object at 0x7fd36067bc00> | Operating System |
| linux | linux_kernel | 7.0 | <built-in method update of dict object at 0x7fd34bb9d900> | Operating System |
| linux | linux_kernel | 7.0 | <built-in method update of dict object at 0x7fd386657ec0> | Operating System |
| linux | linux_kernel | 7.0 | <built-in method update of dict object at 0x7fd34082df00> | Operating System |
| linux | linux_kernel | 7.0 | <built-in method update of dict object at 0x7fd34bb9fd00> | Operating System |
| linux | linux_kernel | 7.0 | <built-in method update of dict object at 0x7fd36b854940> | Operating System |
| linux | linux_kernel | 7.0 | <built-in method update of dict object at 0x7fd36b854900> | 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:2.6.34:-:*:*:*:*:*:* |
| 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:*:*:*:*:*:* |