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LinuxCVE-2021-47194

HistoryApr 10, 2024 - 7:15 p.m.

CVE-2021-47194

2024-04-1019:15:47

CWE-665

Linux

web.nvd.nist.gov

linux kernel

vulnerability

cve-2021-47194

cfg80211

p2p_go

nl80211_iftype_adhoc

nl80211_iftype_p2p_go

data corruption

CVSS3

7.8

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

AI Score

6.4

Confidence

Low

EPSS

Percentile

5.1%

JSON

In the Linux kernel, the following vulnerability has been resolved:

cfg80211: call cfg80211_stop_ap when switch from P2P_GO type

If the userspace tools switch from NL80211_IFTYPE_P2P_GO to
NL80211_IFTYPE_ADHOC via send_msg(NL80211_CMD_SET_INTERFACE), it
does not call the cleanup cfg80211_stop_ap(), this leads to the
initialization of in-use data. For example, this path re-init the
sdata->assigned_chanctx_list while it is still an element of
assigned_vifs list, and makes that linked list corrupt.

Affected configurations

Nvd

Vulners

Node

linuxlinux_kernelRange3.6.0–4.4.293

linuxlinux_kernelRange4.5.0–4.9.291

linuxlinux_kernelRange4.10.0–4.14.256

linuxlinux_kernelRange4.15.0–4.19.218

linuxlinux_kernelRange4.20.0–5.4.162

linuxlinux_kernelRange5.5.0–5.10.82

linuxlinux_kernelRange5.11.0–5.15.5

VendorProductVersionCPE
linuxlinux_kernel*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
linux	linux_kernel	*	cpe:2.3:o:linux:linux_kernel::::::::

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/wireless/util.c"
    ],
    "versions": [
      {
        "version": "ac800140c20e",
        "lessThan": "8f06bb8c216b",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "ac800140c20e",
        "lessThan": "0738cdb636c2",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "ac800140c20e",
        "lessThan": "4e458abbb4a5",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "ac800140c20e",
        "lessThan": "b8a045e2a9b2",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "ac800140c20e",
        "lessThan": "52affc201fc2",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "ac800140c20e",
        "lessThan": "7b97b5776daa",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "ac800140c20e",
        "lessThan": "5a9b671c8d74",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "ac800140c20e",
        "lessThan": "563fbefed46a",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/wireless/util.c"
    ],
    "versions": [
      {
        "version": "3.6",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "3.6",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "4.4.293",
        "lessThanOrEqual": "4.4.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "4.9.291",
        "lessThanOrEqual": "4.9.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "4.14.256",
        "lessThanOrEqual": "4.14.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "4.19.218",
        "lessThanOrEqual": "4.19.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.4.162",
        "lessThanOrEqual": "5.4.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.10.82",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.15.5",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.16",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]