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CVE-2026-23445

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: igc: fix page fault in XDP TX timestamps handling If an XDP application that requested TX timestamping is shutting down while t…

Published Apr 3, 2026EPSS 0.13%

Overview

CVE-2026-23445 is a high-severity vulnerability. It was published on April 3, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. 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:

igc: fix page fault in XDP TX timestamps handling

If an XDP application that requested TX timestamping is shutting down

while the link of the interface in use is still up the following kernel

splat is reported:

[ 883.803618] [ T1554] BUG: unable to handle page fault for address: ffffcfb6200fd008

...

[ 883.803650] [ T1554] Call Trace:

[ 883.803652] [ T1554] <TASK>

[ 883.803654] [ T1554] igc_ptp_tx_tstamp_event+0xdf/0x160 [igc]

[ 883.803660] [ T1554] igc_tsync_interrupt+0x2d5/0x300 [igc]

...

During shutdown of the TX ring the xsk_meta pointers are left behind, so

that the IRQ handler is trying to touch them.

This issue is now being fixed by cleaning up the stale xsk meta data on

TX shutdown. TX timestamps on other queues remain unaffected.

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/31521c124e6488c4a81658e35199feb75a988d86Refgit.kernel.org/stable/c/45b33e805bd39f615d9353a7194b2da5281332dfRefgit.kernel.org/stable/c/5e4c90c94eb766d70e30694b7fe66862aabaf24bRefgit.kernel.org/stable/c/b02fa17d1744d19cd3820bdbf6ec5d85547977bf

How CyberStrike helps

Frequently asked questions

What is CVE-2026-23445?

CVE-2026-23445 is a high-severity vulnerability. It was published on April 3, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2026-23445?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-23445?

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-2026-23445?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-23445 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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