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CVE-2022-48757

Disclosure Date: June 20, 2024
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Description

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.

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CVSS V3 Severity and Metrics
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General Information

Vendors

  • Linux

Products

  • Linux
Technical Analysis