CVE-2022-48786

Medium

In the Linux kernel, the following vulnerability has been resolved: vsock: remove vsock from connected table when connect is interrupted by a signal vsock_connect() expects that the socket could already be in the TCP_ESTABLISHED state when the connecting task wakes up with a signal pending. If this happens the socket will be in the connected table, and it is not removed when the socket state is reset. In this situation it's common for the process to retry connect(), and if the connection is successful the socket will be added to the connected table a second time, corrupting the list. Prevent this by calling vsock_remove_connected() if a signal is received while waiting for a connection. This is harmless if the socket is not in the connected table, and if it is in the table then removing it will prevent list corruption from a double add. Note for backporting: this patch requires d5afa82c977e ("vsock: correct removal of socket from the list"), which is in all current stable trees except 4.9.y.

Package Linux Kernel
Published 2024-07-16
Last modified 2025-10-03
CVSS version 3.1
Patch available
Yes

CVSS 3.1 score

5.5

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

Affected versions

Linux kernel versions 3.9 and later are affected. Fixed in 4.9.303, 4.14.268, 4.19.231, 5.4.181, 5.10.102, 5.15.25, 5.16.11, 5.17 and their respective stable series.

Affected from
≥ 3.9
Fixed in
✓ 4.9.303 4.9.x ✓ 4.14.268 4.14.x ✓ 4.19.231 4.19.x ✓ 5.4.181 5.4.x ✓ 5.10.102 5.10.x ✓ 5.15.25 5.15.x ✓ 5.16.11 5.16.x ✓ 5.17

References

8 total
Showing 5 of 8 references View all on NVD

Frequently asked questions

  • What is CVE-2022-48786?

    CVE-2022-48786 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 3.9 onward and has been patched in 4.9.303, 4.14.268, 4.19.231 and others. CVE-2022-48786 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • What is the CVSS score for CVE-2022-48786?

    CVE-2022-48786 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H .

  • Is there a patch available for CVE-2022-48786?

    Yes. CVE-2022-48786 has been patched. Fixed versions include 4.9.303, 4.14.268, 4.19.231 and others. If you are running Linux kernel 3.9 or later up to the fix versions, apply the relevant patch for your kernel branch.

  • Is CVE-2022-48786 actively exploited?

    No. CVE-2022-48786 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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