CVE-2021-47194

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.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/0738cdb636c21ab552eaecf905efa4a6070e3ebc	Patch
https://git.kernel.org/stable/c/4e458abbb4a523f1413bfe15c079cf4e24c15b21	Patch
https://git.kernel.org/stable/c/52affc201fc22a1ab9a59ef0ed641a9adfcb8d13	Patch
https://git.kernel.org/stable/c/563fbefed46ae4c1f70cffb8eb54c02df480b2c2	Patch
https://git.kernel.org/stable/c/5a9b671c8d74a3e1b999e7a0c7f366079bcc93dd	Patch
https://git.kernel.org/stable/c/7b97b5776daa0b39dbdadfea176f9cc0646d4a66	Patch
https://git.kernel.org/stable/c/8f06bb8c216bcd172394f61e557727e691b4cb24	Patch
https://git.kernel.org/stable/c/b8a045e2a9b234cfbc06cf36923886164358ddec	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::

History

No history.

Information

Published : 2024-04-10 19:15

Updated : 2024-04-19 19:19

NVD link : CVE-2021-47194

Mitre link : CVE-2021-47194

CVE.ORG link : CVE-2021-47194

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-665

Improper Initialization

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