vulnerability
Huawei EulerOS: CVE-2024-44995: kernel security update
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:L/AC:L/Au:S/C:N/I:N/A:C) | 09/04/2024 | 12/12/2024 | 01/28/2025 |
Description
In the Linux kernel, the following vulnerability has been resolved:
net: hns3: fix a deadlock problem when config TC during resetting
When config TC during the reset process, may cause a deadlock, the flow is
as below:
pf reset start
¦
?
......
setup tc ¦
¦ ?
? DOWN: napi_disable()
napi_disable()(skip) ¦
¦ ¦
? ?
...... ......
¦ ¦
? ¦
napi_enable() ¦
?
UINIT: netif_napi_del()
¦
?
......
¦
?
INIT: netif_napi_add()
¦
?
...... global reset start
¦ ¦
? ?
UP: napi_enable()(skip) ......
¦ ¦
? ?
...... napi_disable()
In reset process, the driver will DOWN the port and then UINIT, in this
case, the setup tc process will UP the port before UINIT, so cause the
problem. Adds a DOWN process in UINIT to fix it.
Solution(s)
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