Vulnerability in Linux

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.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H.

EPSS exploit prediction

EPSS: 0.002 (11.6th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 12th percentile — 11.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2022-48757: held from 0.002 to 0.002.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

  • Linux — versions 2feb27dbe00cbb4f7d31f90acf6bd0d751dd0a50, 2.6.26, 0
  • Linux Kernel — versions 5.17

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2022-48757?
CVE-2022-48757 is a high-severity vulnerability in Linux, classified under Exposure of Resource to Wrong Sphere. CVSS score: 7.1/10. Published 2024-06-20.
How severe is CVE-2022-48757?
High severity. CVSS v3 base score is 7.1 out of 10.