In the Linux kernel, the following vulnerability has been resolved: bpf: Send signals asynchronously if !preemptible BPF programs can execute in all kinds of contexts and when a program running in a non-preemptible context uses the bpf_send_signal() kfunc, it will cause issues because this kfunc can sleep. Change `irqs_disabled()` to `!preemptible()`.
En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: bpf: Envía señales de forma asincrónica si los programas BPF !preemptible pueden ejecutarse en todo tipo de contextos y cuando un programa que se ejecuta en un contexto no preemptible utiliza la función kfunc bpf_send_signal(), causará problemas porque esta función kfunc puede suspenderse. Cambie `irqs_disabled()` a `!preemptible()`.
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 |
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NVD-CWE-noinfo
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| Vendor | Product | Version | Update | Type |
|---|---|---|---|---|
| linux | linux_kernel | * | <built-in method update of dict object at 0x702bcbbf7c00> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x702bdd9a1540> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x702bdd9a3340> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x702bdd9a0c40> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x702bcbbf5a40> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x702bdcc99000> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x702bdd9a1700> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x702bcab44a80> | Operating System |
| linux | linux_kernel | 5.6 | <built-in method update of dict object at 0x702bcbbf6cc0> | 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:*:*:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:5.6:-:*:*:*:*:*:* |