CVE-2021-47194

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. 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.

7.8 /10

CVSS v3 : HIGH

V3 Legend

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
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

21 Nov 2024, 06:35

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/0738cdb636c21ab552eaecf905efa4a6070e3ebc - Patch () https://git.kernel.org/stable/c/0738cdb636c21ab552eaecf905efa4a6070e3ebc - Patch
References () https://git.kernel.org/stable/c/4e458abbb4a523f1413bfe15c079cf4e24c15b21 - Patch () https://git.kernel.org/stable/c/4e458abbb4a523f1413bfe15c079cf4e24c15b21 - Patch
References () https://git.kernel.org/stable/c/52affc201fc22a1ab9a59ef0ed641a9adfcb8d13 - Patch () https://git.kernel.org/stable/c/52affc201fc22a1ab9a59ef0ed641a9adfcb8d13 - Patch
References () https://git.kernel.org/stable/c/563fbefed46ae4c1f70cffb8eb54c02df480b2c2 - Patch () https://git.kernel.org/stable/c/563fbefed46ae4c1f70cffb8eb54c02df480b2c2 - Patch
References () https://git.kernel.org/stable/c/5a9b671c8d74a3e1b999e7a0c7f366079bcc93dd - Patch () https://git.kernel.org/stable/c/5a9b671c8d74a3e1b999e7a0c7f366079bcc93dd - Patch
References () https://git.kernel.org/stable/c/7b97b5776daa0b39dbdadfea176f9cc0646d4a66 - Patch () https://git.kernel.org/stable/c/7b97b5776daa0b39dbdadfea176f9cc0646d4a66 - Patch
References () https://git.kernel.org/stable/c/8f06bb8c216bcd172394f61e557727e691b4cb24 - Patch () https://git.kernel.org/stable/c/8f06bb8c216bcd172394f61e557727e691b4cb24 - Patch
References () https://git.kernel.org/stable/c/b8a045e2a9b234cfbc06cf36923886164358ddec - Patch () https://git.kernel.org/stable/c/b8a045e2a9b234cfbc06cf36923886164358ddec - Patch
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: cfg80211: llame a cfg80211_stop_ap cuando cambie del tipo P2P_GO. Si las herramientas del espacio de usuario cambian de NL80211_IFTYPE_P2P_GO a NL80211_IFTYPE_ADHOC mediante send_msg(NL80211_CMD_SET_INTERFACE), no llama a la limpieza cfg80211_ stop_ap(), esto lleva a la inicialización de datos en uso. Por ejemplo, esta ruta reinicia sdata->assigned_chanctx_list mientras todavía es un elemento de la lista asignada_vifs y corrompe esa lista vinculada.

19 Apr 2024, 19:19

Type Values Removed Values Added
CWE CWE-665
References () https://git.kernel.org/stable/c/0738cdb636c21ab552eaecf905efa4a6070e3ebc - () https://git.kernel.org/stable/c/0738cdb636c21ab552eaecf905efa4a6070e3ebc - Patch
References () https://git.kernel.org/stable/c/4e458abbb4a523f1413bfe15c079cf4e24c15b21 - () https://git.kernel.org/stable/c/4e458abbb4a523f1413bfe15c079cf4e24c15b21 - Patch
References () https://git.kernel.org/stable/c/52affc201fc22a1ab9a59ef0ed641a9adfcb8d13 - () https://git.kernel.org/stable/c/52affc201fc22a1ab9a59ef0ed641a9adfcb8d13 - Patch
References () https://git.kernel.org/stable/c/563fbefed46ae4c1f70cffb8eb54c02df480b2c2 - () https://git.kernel.org/stable/c/563fbefed46ae4c1f70cffb8eb54c02df480b2c2 - Patch
References () https://git.kernel.org/stable/c/5a9b671c8d74a3e1b999e7a0c7f366079bcc93dd - () https://git.kernel.org/stable/c/5a9b671c8d74a3e1b999e7a0c7f366079bcc93dd - Patch
References () https://git.kernel.org/stable/c/7b97b5776daa0b39dbdadfea176f9cc0646d4a66 - () https://git.kernel.org/stable/c/7b97b5776daa0b39dbdadfea176f9cc0646d4a66 - Patch
References () https://git.kernel.org/stable/c/8f06bb8c216bcd172394f61e557727e691b4cb24 - () https://git.kernel.org/stable/c/8f06bb8c216bcd172394f61e557727e691b4cb24 - Patch
References () https://git.kernel.org/stable/c/b8a045e2a9b234cfbc06cf36923886164358ddec - () https://git.kernel.org/stable/c/b8a045e2a9b234cfbc06cf36923886164358ddec - Patch
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 7.8
First Time Linux linux Kernel
Linux

10 Apr 2024, 19:49

Type Values Removed Values Added
New CVE
Information

Published : 2024-04-10 19:15

Updated : 2024-11-21 06:35

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