In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwifi: read txq->read_ptr under lock If we read txq->read_ptr without lock, we can read the same value twice, then obtain the lock, and reclaim from there to two different places, but crucially reclaim the same entry twice, resulting in the WARN_ONCE() a little later. Fix that by reading txq->read_ptr under lock.
En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: wifi: iwlwifi: leer txq->read_ptr bajo bloqueo Si leemos txq->read_ptr sin bloqueo, podemos leer el mismo valor dos veces, luego obtener el bloqueo y reclamar desde allí a dos lugares diferentes, pero fundamentalmente reclama la misma entrada dos veces, lo que resulta en WARN_ONCE() un poco más tarde. Solucione eso leyendo txq->read_ptr bajo bloqueo.
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 0x7fd3855b0940> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x7fd3401d0b40> | Operating System |
| linux | linux_kernel | 6.9 | <built-in method update of dict object at 0x7fd3855d8700> | 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:6.9:rc1:*:*:*:*:*:* |