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VULNERABILITIES

CVE-2026-90306 Details

Description

In the Linux kernel, the following vulnerability has been resolved: ARM: 9481/2: breakpoint: CFI breakpoints only on demand This removes the stub hw_breakpoint_cfi_handler() from ARM, making it not steal breakpoint type 0x03 (ARM_ENTRY_CFI_BREAKPOINT) unless CFI is actively used in the kernel. When not instrumenting with CFI, or when a breakpoint is issued in userspace, we fall through to return 1 from hw_breakpoint_pending() "unhandled fault" so userspace can make use of this breakpoint. Tested with LKDTM and this command line: echo CFI_FORWARD_PROTO > /sys/kernel/debug/provoke-crash/DIRECT still works as expected.

Metrics

CVSS 3.x Severity and Vector Strings:

No CVSS 3.x data is available for this CVE.

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://git.kernel.org/stable/c/314f1a6762b5d51b37784ed7dc701d4c3d893703 kernel.org
https://git.kernel.org/stable/c/8ed9bff906cf8036531d1559f10e82733a52b41f kernel.org
https://git.kernel.org/stable/c/da64b150e4b7bee615b33ab21f3137c31ec36922 kernel.org

Weakness Enumeration

No weakness enumeration is available for this CVE.

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-90306
NVD Published Date:
Sep 17, 2026
NVD Last Modified:
Sep 21, 2026
Source:
kernel.org
CVE-2026-90306 Details - Not Deferred