In the Linux kernel, the following vulnerability has been resolved: net/sched: act_gate: snapshot parameters with RCU on replace The gate action can be replaced while the hrtimer callback or dump path is walking the schedule list. Convert the parameters to an RCU-protected snapshot and swap updates under tcf_lock, freeing the previous snapshot via call_rcu(). When REPLACE omits the entry list, preserve the existing schedule so the effective state is unchanged.
En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta: net/sched: act_gate: instantánea de parámetros con RCU al reemplazar La acción de puerta puede ser reemplazada mientras la devolución de llamada de hrtimer o la ruta de volcado está recorriendo la lista de programación. Convertir los parámetros a una instantánea protegida por RCU e intercambiar actualizaciones bajo tcf_lock, liberando la instantánea anterior mediante call_rcu(). Cuando REPLACE omite la lista de entradas, preservar la programación existente para que el estado efectivo permanezca inalterado.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
| Attack Vector | LOCAL |
|---|---|
| Attack Complexity | LOW |
| Privileges Required | LOW |
| User Interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality Impact | HIGH |
| Integrity Impact | HIGH |
| Availability Impact | HIGH |
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Type: Secondary
Exploitability Score: 1.8
Impact Score: 5.9
| 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 0x702b703777c0> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x702bcc9b3040> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x702b70376c80> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x702b70374e80> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x702bcc9b2e80> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x702bcc9b2700> | Operating System |
| linux | linux_kernel | 5.8 | <built-in method update of dict object at 0x702bcc9b1f00> | Operating System |
| linux | linux_kernel | 7.0 | <built-in method update of dict object at 0x702bde22b280> | Operating System |
| linux | linux_kernel | 7.0 | <built-in method update of dict object at 0x702bcc9b0900> | 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:5.8:-:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:* |