CVE-2022-48757

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2022-48757
In the Linux kernel, the following vulnerability has been resolved: net: fix information leakage in /proc/net/ptype In one net namespace, after creating a packet socket without binding it to a device, users in other net namespaces can observe the new `packet_type` added by this packet socket by reading `/proc/net/ptype` file. This is minor information leakage as packet socket is namespace aware. Add a net pointer in `packet_type` to keep the net namespace of of corresponding packet socket. In `ptype_seq_show`, this net pointer must be checked when it is not NULL.

7.1 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 5.2

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/47934e06b65637c88a762d9c98329ae6e3238888 Patch
https://git.kernel.org/stable/c/839ec7039513a4f84bfbaff953a9393471176bee Patch
https://git.kernel.org/stable/c/8f88c78d24f6f346919007cd459fd7e51a8c7779 Patch
https://git.kernel.org/stable/c/b67ad6170c0ea87391bb253f35d1f78857736e54 Patch
https://git.kernel.org/stable/c/be1ca30331c7923c6f376610c1bd6059be9b1908 Patch
https://git.kernel.org/stable/c/c38023032a598ec6263e008d62c7f02def72d5c7 Patch
https://git.kernel.org/stable/c/db044d97460ea792110eb8b971e82569ded536c6 Patch
https://git.kernel.org/stable/c/e372ecd455b6ebc7720f52bf4b5f5d44d02f2092 Patch
https://git.kernel.org/stable/c/e43669c77cb3a742b7d84ecdc7c68c4167a7709b Patch
https://git.kernel.org/stable/c/47934e06b65637c88a762d9c98329ae6e3238888 Patch
https://git.kernel.org/stable/c/839ec7039513a4f84bfbaff953a9393471176bee Patch
https://git.kernel.org/stable/c/8f88c78d24f6f346919007cd459fd7e51a8c7779 Patch
https://git.kernel.org/stable/c/b67ad6170c0ea87391bb253f35d1f78857736e54 Patch
https://git.kernel.org/stable/c/be1ca30331c7923c6f376610c1bd6059be9b1908 Patch
https://git.kernel.org/stable/c/c38023032a598ec6263e008d62c7f02def72d5c7 Patch
https://git.kernel.org/stable/c/db044d97460ea792110eb8b971e82569ded536c6 Patch
https://git.kernel.org/stable/c/e372ecd455b6ebc7720f52bf4b5f5d44d02f2092 Patch
https://git.kernel.org/stable/c/e43669c77cb3a742b7d84ecdc7c68c4167a7709b 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:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.17:rc1:*:*:*:*:*:*
History

17 Sep 2025, 17:13

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/47934e06b65637c88a762d9c98329ae6e3238888 - () https://git.kernel.org/stable/c/47934e06b65637c88a762d9c98329ae6e3238888 - Patch
References () https://git.kernel.org/stable/c/839ec7039513a4f84bfbaff953a9393471176bee - () https://git.kernel.org/stable/c/839ec7039513a4f84bfbaff953a9393471176bee - Patch
References () https://git.kernel.org/stable/c/8f88c78d24f6f346919007cd459fd7e51a8c7779 - () https://git.kernel.org/stable/c/8f88c78d24f6f346919007cd459fd7e51a8c7779 - Patch
References () https://git.kernel.org/stable/c/b67ad6170c0ea87391bb253f35d1f78857736e54 - () https://git.kernel.org/stable/c/b67ad6170c0ea87391bb253f35d1f78857736e54 - Patch
References () https://git.kernel.org/stable/c/be1ca30331c7923c6f376610c1bd6059be9b1908 - () https://git.kernel.org/stable/c/be1ca30331c7923c6f376610c1bd6059be9b1908 - Patch
References () https://git.kernel.org/stable/c/c38023032a598ec6263e008d62c7f02def72d5c7 - () https://git.kernel.org/stable/c/c38023032a598ec6263e008d62c7f02def72d5c7 - Patch
References () https://git.kernel.org/stable/c/db044d97460ea792110eb8b971e82569ded536c6 - () https://git.kernel.org/stable/c/db044d97460ea792110eb8b971e82569ded536c6 - Patch
References () https://git.kernel.org/stable/c/e372ecd455b6ebc7720f52bf4b5f5d44d02f2092 - () https://git.kernel.org/stable/c/e372ecd455b6ebc7720f52bf4b5f5d44d02f2092 - Patch
References () https://git.kernel.org/stable/c/e43669c77cb3a742b7d84ecdc7c68c4167a7709b - () https://git.kernel.org/stable/c/e43669c77cb3a742b7d84ecdc7c68c4167a7709b - Patch
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 7.1
First Time Linux
Linux linux Kernel
CWE CWE-668
CPE cpe:2.3:o:linux:linux_kernel:5.17:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

21 Nov 2024, 07:33

Type Values Removed Values Added
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: corrige la fuga de información en /proc/net/ptype en un espacio de nombres de red, después de crear un socket de paquetes sin vincularlo a un dispositivo, los usuarios de otros espacios de nombres de red pueden observar la nueva `packet_type` agregado por este socket de paquete leyendo el archivo `/proc/net/ptype`. Esta es una fuga de información menor ya que el socket del paquete reconoce el espacio de nombres. Agregue un puntero de red en `packet_type` para mantener el espacio de nombres de red del socket de paquete correspondiente. En `ptype_seq_show`, este puntero de red debe verificarse cuando no sea NULL.
References () https://git.kernel.org/stable/c/47934e06b65637c88a762d9c98329ae6e3238888 - () https://git.kernel.org/stable/c/47934e06b65637c88a762d9c98329ae6e3238888 -
References () https://git.kernel.org/stable/c/839ec7039513a4f84bfbaff953a9393471176bee - () https://git.kernel.org/stable/c/839ec7039513a4f84bfbaff953a9393471176bee -
References () https://git.kernel.org/stable/c/8f88c78d24f6f346919007cd459fd7e51a8c7779 - () https://git.kernel.org/stable/c/8f88c78d24f6f346919007cd459fd7e51a8c7779 -
References () https://git.kernel.org/stable/c/b67ad6170c0ea87391bb253f35d1f78857736e54 - () https://git.kernel.org/stable/c/b67ad6170c0ea87391bb253f35d1f78857736e54 -
References () https://git.kernel.org/stable/c/be1ca30331c7923c6f376610c1bd6059be9b1908 - () https://git.kernel.org/stable/c/be1ca30331c7923c6f376610c1bd6059be9b1908 -
References () https://git.kernel.org/stable/c/c38023032a598ec6263e008d62c7f02def72d5c7 - () https://git.kernel.org/stable/c/c38023032a598ec6263e008d62c7f02def72d5c7 -
References () https://git.kernel.org/stable/c/db044d97460ea792110eb8b971e82569ded536c6 - () https://git.kernel.org/stable/c/db044d97460ea792110eb8b971e82569ded536c6 -
References () https://git.kernel.org/stable/c/e372ecd455b6ebc7720f52bf4b5f5d44d02f2092 - () https://git.kernel.org/stable/c/e372ecd455b6ebc7720f52bf4b5f5d44d02f2092 -
References () https://git.kernel.org/stable/c/e43669c77cb3a742b7d84ecdc7c68c4167a7709b - () https://git.kernel.org/stable/c/e43669c77cb3a742b7d84ecdc7c68c4167a7709b -

20 Jun 2024, 12:15

Type Values Removed Values Added
New CVE
Information

Published : 2024-06-20 12:15

Updated : 2025-09-17 17:13

NVD link : CVE-2022-48757

Mitre link : CVE-2022-48757

CVE.ORG link : CVE-2022-48757

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-668

Exposure of Resource to Wrong Sphere