CVE-2023-3390

High

A use-after-free vulnerability was found in the Linux kernel's netfilter subsystem in net/netfilter/nf_tables_api.c. Mishandled error handling with NFT_MSG_NEWRULE makes it possible to use a dangling pointer in the same transaction causing a use-after-free vulnerability. This flaw allows a local attacker with user access to cause a privilege escalation issue. We recommend upgrading past commit 1240eb93f0616b21c675416516ff3d74798fdc97

Package Linux Kernel
Published 2023-06-28
Last modified 2026-07-22
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-2023-3390 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 3.16, 4.15, 4.20, 5.5, 5.11, 5.16, 6.2 and later are affected. Fixed in 4.14.322, 4.19.291, 5.4.251, 5.10.188, 5.15.118, 6.1.35, 6.3.9 and their respective stable series.

Affected from
≥ 3.16 ≥ 4.15 ≥ 4.20 ≥ 5.5 ≥ 5.11 ≥ 5.16 ≥ 6.2
Fixed in
✓ 4.14.322 4.14.x ✓ 4.19.291 4.19.x ✓ 5.4.251 5.4.x ✓ 5.10.188 5.10.x ✓ 5.15.118 5.15.x ✓ 6.1.35 6.1.x ✓ 6.3.9 6.3.x

References

11 total
Showing 5 of 11 references View all on NVD

Frequently asked questions

  • What is CVE-2023-3390?

    CVE-2023-3390 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 3.16 onward and has been patched in 4.14.322, 4.19.291, 5.4.251 and others. CVE-2023-3390 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • What is the CVSS score for CVE-2023-3390?

    CVE-2023-3390 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-2023-3390?

    Yes. CVE-2023-3390 has been patched. Fixed versions include 4.14.322, 4.19.291, 5.4.251 and others. If you are running Linux kernel 3.16 or later up to the fix versions, apply the relevant patch for your kernel branch.

  • Is CVE-2023-3390 actively exploited?

    No. CVE-2023-3390 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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