CVE-2026-90306

CVE CVE-2026-90306EUVD EUVD-2026-81967Published 2026-09-17T16:08:28.000ZLast changed 2026-09-21T13:15:22.000Z

What the advisory describes

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.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux 6.10; patch: 0; patch: 7.3-rc1; c3f89986fde7bb9ccc86a901bf28e1f7d69fc3b3 <8ed9bff906cf8036531d1559f10e82733a52b41f; c3f89986fde7bb9ccc86a901bf28e1f7d69fc3b3 <da64b150e4b7bee615b33ab21f3137c31ec36922; patch: 7.2.6; c3f89986fde7bb9ccc86a901bf28e1f7d69fc3b3 <314f1a6762b5d51b37784ed7dc701d4c3d893703; patch: 6.18.52

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.

Linux — Linux

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