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CVE-2026-23023

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: idpf: fix memory leak in idpf_vport_rel() Free vport->rx_ptype_lkup in idpf_vport_rel() to avoid leaking memory during a reset.

Published Jan 31, 2026CWE-401EPSS 0.17%

Overview

CVE-2026-23023 is a medium-severity vulnerability. It was published on January 31, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

idpf: fix memory leak in idpf_vport_rel()

Free vport->rx_ptype_lkup in idpf_vport_rel() to avoid leaking memory

during a reset. Reported by kmemleak:

unreferenced object 0xff450acac838a000 (size 4096):

comm "kworker/u258:5", pid 7732, jiffies 4296830044

hex dump (first 32 bytes):

00 00 00 00 00 10 00 00 00 10 00 00 00 00 00 00 ................

00 00 00 00 00 00 00 00 00 10 00 00 00 00 00 00 ................

backtrace (crc 3da81902):

__kmalloc_cache_noprof+0x469/0x7a0

idpf_send_get_rx_ptype_msg+0x90/0x570 [idpf]

idpf_init_task+0x1ec/0x8d0 [idpf]

process_one_work+0x226/0x6d0

worker_thread+0x19e/0x340

kthread+0x10f/0x250

ret_from_fork+0x251/0x2b0

ret_from_fork_asm+0x1a/0x30

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/a4212d6732e3f674c6cc7d0b642f276d827e8f94Refgit.kernel.org/stable/c/ec602a2a4071eb956d656ba968c58fee09f0622dRefgit.kernel.org/stable/c/f6242b354605faff263ca45882b148200915a3f6

How CyberStrike helps

Frequently asked questions

What is CVE-2026-23023?

CVE-2026-23023 is a medium-severity vulnerability. It was published on January 31, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2026-23023?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-23023?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-23023?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-23023 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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