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 a Use After Free flaw (CWE-416), affecting Linux kernel versions from 2.6.39 onward and 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. 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?

CVE-2023-52974 has not been confirmed as actively exploited and is not listed in the CISA 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. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/416.html

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

7 total

Kernel Git
https://git.kernel.org/stable/c/0aaabdb900c7415caa2006ef580322f7eac5f6b6

Patch
Kernel Git
https://git.kernel.org/stable/c/496af9d3682ed4c28fb734342a09e6cc0c056ea4

Patch
Kernel Git
https://git.kernel.org/stable/c/61e43ebfd243bcbad11be26bd921723027b77441

Patch
Kernel Git
https://git.kernel.org/stable/c/6abd4698f4c8a78e7bbfc421205c060c199554a0

Patch
Kernel Git
https://git.kernel.org/stable/c/9758ffe1c07b86aefd7ca8e40d9a461293427ca0

Patch

Showing 5 of 7 references View all on NVD

Details

CVE ID CVE-2023-52974

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2025-03-27

Modified 2025-04-01

KEV No

Patch

Yes

Package linux

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.