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CVE-2026-23453

7.5 · HIGH

In the Linux kernel, the following vulnerability has been resolved: net: ti: icssg-prueth: Fix memory leak in XDP_DROP for non-zero-copy mode Page recycling was removed from the XDP_DROP path in…

Published Apr 3, 2026CWE-401EPSS 0.34%

Overview

CVE-2026-23453 is a high-severity vulnerability. It was published on April 3, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

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

net: ti: icssg-prueth: Fix memory leak in XDP_DROP for non-zero-copy mode

Page recycling was removed from the XDP_DROP path in emac_run_xdp() to

avoid conflicts with AF_XDP zero-copy mode, which uses xsk_buff_free()

instead.

However, this causes a memory leak when running XDP programs that drop

packets in non-zero-copy mode (standard page pool mode). The pages are

never returned to the page pool, leading to OOM conditions.

Fix this by handling cleanup in the caller, emac_rx_packet().

When emac_run_xdp() returns ICSSG_XDP_CONSUMED for XDP_DROP, the

caller now recycles the page back to the page pool. The zero-copy

path, emac_rx_packet_zc() already handles cleanup correctly with

xsk_buff_free().

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/719d3e71691db7c4f1658ba5a6d1472928121594Refgit.kernel.org/stable/c/d16d57dedcb69c1a1257e0638f8698ce1f0ccbe5

How CyberStrike helps

Frequently asked questions

What is CVE-2026-23453?

CVE-2026-23453 is a high-severity vulnerability. It was published on April 3, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2026-23453?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-23453?

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-2026-23453?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-23453 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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