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CVE-2026-98469

7.1 · HIGH

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Fix AArch32 DBGBXVR<n> handling The consolidation of the breakpoint and watchpoint register accessors switched DBGB…

Published Oct 18, 2026EPSS 0.17%

Overview

CVE-2026-98469 is a high-severity vulnerability. It was published on October 18, 2026 and has a CVSS 3.1 base score of 7.1 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.1, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

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

KVM: arm64: Fix AArch32 DBGBXVR<n> handling

The consolidation of the breakpoint and watchpoint register accessors

switched DBGBXVR<n> from trap_bvr() to trap_dbg_wb_reg(). The latter

selects backing storage with demux_wb_reg(), which only handles Op2 values

4 through 7. Since DBGBXVR<n> uses Op2 1, an AArch32 guest access hits

KVM_BUG_ON() and marks the VM dead.

DBGBXVR<n> aliases DBGBVR<n>_EL1[63:32], and its AA32(HI) descriptor

already selects the upper half. Map Op2 1 to dbg_bvr[] alongside Op2 4,

restoring the pre-regression behavior.

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/6b1bca1b1ab77f60a62087337bfe6e2f0efb9e6dRefgit.kernel.org/stable/c/8530a05b304d312fe7dfbc5df7d3e87cc31b256aRefgit.kernel.org/stable/c/af6813d16ace2765011ca1c567be86ade1d1ee8e

How CyberStrike helps

Frequently asked questions

What is CVE-2026-98469?

CVE-2026-98469 is a high-severity vulnerability. It was published on October 18, 2026 and has a CVSS 3.1 base score of 7.1 (HIGH).

How severe is CVE-2026-98469?

This vulnerability has a CVSS 3.1 base score of 7.1, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-98469?

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-2026-98469?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-98469 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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