CVE-2024-44995 net: hns3: fix a deadlock problem when config TC during resetting

2024-09-0419:54:40

Linux

www.cve.org

linux kernel

net configuration

deadlock problem

EPSS

Percentile

5.1%

JSON

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.

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/net/ethernet/hisilicon/hns3/hns3_enet.c"
    ],
    "versions": [
      {
        "version": "bb6b94a896d4",
        "lessThan": "67492d4d105c",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "bb6b94a896d4",
        "lessThan": "fc250eca15bd",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "bb6b94a896d4",
        "lessThan": "195918217448",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "bb6b94a896d4",
        "lessThan": "6ae2b7d63cd0",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "bb6b94a896d4",
        "lessThan": "fa1d4de7265c",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "bb6b94a896d4",
        "lessThan": "de37408d5c26",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "bb6b94a896d4",
        "lessThan": "be5e816d00a5",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/net/ethernet/hisilicon/hns3/hns3_enet.c"
    ],
    "versions": [
      {
        "version": "4.15",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "4.15",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.4.283",
        "lessThanOrEqual": "5.4.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.10.225",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.15.166",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.1.107",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.6.48",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.10.7",
        "lessThanOrEqual": "6.10.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.11",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]