CVE-2023-52974

High

In the Linux kernel, the following vulnerability has been resolved: scsi: iscsi_tcp: Fix UAF during login when accessing the shost ipaddress If during iscsi_sw_tcp_session_create() iscsi_tcp_r2tpool_alloc() fails, userspace could be accessing the host's ipaddress attr. If we then free the session via iscsi_session_teardown() while userspace is still accessing the session we will hit a use after free bug. Set the tcp_sw_host->session after we have completed session creation and can no longer fail.

Package Linux Kernel
Published 2025-03-27
Last modified 2025-04-01
CVSS version 3.1
Patch available
Yes

CVSS 3.1 score

7.8

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

Weakness type

CWE-416

CVE-2023-52974 is a Use After Free vulnerability

What is Use After Free?

The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. Learn more on MITRE CWE

Affected versions

Linux kernel versions 2.6.39 and later are affected. Fixed in 4.14.306, 4.19.273, 5.4.232, 5.10.168, 5.15.93, 6.1.11, 6.2 and their respective stable series.

Affected from
≥ 2.6.39
Fixed in
✓ 4.14.306 4.14.x ✓ 4.19.273 4.19.x ✓ 5.4.232 5.4.x ✓ 5.10.168 5.10.x ✓ 5.15.93 5.15.x ✓ 6.1.11 6.1.x ✓ 6.2

References

The following references provide additional information about CVE-2023-52974 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

7 patch commits total View all on NVD

Frequently asked questions

  • What is CVE-2023-52974?

    CVE-2023-52974 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 , classified as an Use After Free flaw (CWE-416) . It affects Linux kernel versions from 2.6.39 onward and has been patched in 4.14.306, 4.19.273, 5.4.232 and others. CVE-2023-52974 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • What is the CVSS score for CVE-2023-52974?

    CVE-2023-52974 has a CVSS score of 7.8 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:H/A:H .

  • Is there a patch available for CVE-2023-52974?

    Yes — CVE-2023-52974 has been patched. Fixed versions include 4.14.306, 4.19.273, 5.4.232 and others. If you are running Linux kernel 2.6.39 or later up to the fix versions, apply the relevant patch for your kernel branch.

  • Is CVE-2023-52974 actively exploited?

    No — CVE-2023-52974 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

  • What is Use After Free (CWE-416)?

    The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. View CWE-416 on MITRE CWE →

Back to
All CVEs
View on
NVD / NIST