CVE-2026-90306

Unknown

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.

SeverityUnknown

CVSS—

Exploit probability—

Product

Linux

PublishedSep 17, 2026

First seenSep 17, 2026

How to fix

Update

Linux Linux314f1a6762b5d51b37784ed7dc701d4c3d893703, da64b150e4b7bee615b33ab21f3137c31ec36922, 8ed9bff906cf8036531d1559f10e82733a52b41f or later

Affected products

Product	Affected versions	Fixed in
Linux Linux	c3f89986fde7bb9ccc86a901bf28e1f7d69fc3b3 ≤ v < 314f1a6762b5d51b37784ed7dc701d4c3d893703, c3f89986fde7bb9ccc86a901bf28e1f7d69fc3b3 ≤ v < da64b150e4b7bee615b33ab21f3137c31ec36922, c3f89986fde7bb9ccc86a901bf28e1f7d69fc3b3 ≤ v < 8ed9bff906cf8036531d1559f10e82733a52b41f, 6.10	314f1a6762b5d51b37784ed7dc701d4c3d893703, da64b150e4b7bee615b33ab21f3137c31ec36922, 8ed9bff906cf8036531d1559f10e82733a52b41f

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.