CVE-2022-48757

High

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.

Package Linux Kernel
Published 2024-06-20
Last modified 2025-09-17
CVSS version 3.1
Patch available
Yes

CVSS 3.1 score

7.1

out of 10
High
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
High
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Weakness type

CWE-668

CVE-2022-48757 is classified as CWE-668

See CWE-668 on MITRE CWE for full details on this weakness type.

Affected versions

Linux kernel versions 2.6.26 and later are affected. Fixed in 4.4.302, 4.9.300, 4.14.265, 4.19.228, 5.4.176, 5.10.96, 5.15.19, 5.16.5, 5.17 and their respective stable series.

Affected from
≥ 2.6.26
Fixed in
✓ 4.4.302 4.4.x ✓ 4.9.300 4.9.x ✓ 4.14.265 4.14.x ✓ 4.19.228 4.19.x ✓ 5.4.176 5.4.x ✓ 5.10.96 5.10.x ✓ 5.15.19 5.15.x ✓ 5.16.5 5.16.x ✓ 5.17

References

9 total
Showing 5 of 9 references View all on NVD

Frequently asked questions

  • What is CVE-2022-48757?

    CVE-2022-48757 is a High severity Linux kernel vulnerability with a CVSS score of 7.1 out of 10 . It affects Linux kernel versions from 2.6.26 onward and has been patched in 4.4.302, 4.9.300, 4.14.265 and others. CVE-2022-48757 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • What is the CVSS score for CVE-2022-48757?

    CVE-2022-48757 has a CVSS score of 7.1 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H .

  • Is there a patch available for CVE-2022-48757?

    Yes. CVE-2022-48757 has been patched. Fixed versions include 4.4.302, 4.9.300, 4.14.265 and others. If you are running Linux kernel 2.6.26 or later up to the fix versions, apply the relevant patch for your kernel branch.

  • Is CVE-2022-48757 actively exploited?

    No. CVE-2022-48757 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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