CVE-2026-90306

UNKNOWN 0.0

ARM: 9481/2: breakpoint: CFI breakpoints only on demand

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

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.

Vendor	linux
Product	linux
Ecosystems	Linux Kernel
Industries	Technology
Published	Sep 17, 2026

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Affected Versions

Linux / Linux

c3f89986fde7bb9ccc86a901bf28e1f7d69fc3b3 < 22107402c2669b0163d43cc68901a2c4a59fa43a c3f89986fde7bb9ccc86a901bf28e1f7d69fc3b3 < 314f1a6762b5d51b37784ed7dc701d4c3d893703 c3f89986fde7bb9ccc86a901bf28e1f7d69fc3b3 < da64b150e4b7bee615b33ab21f3137c31ec36922 c3f89986fde7bb9ccc86a901bf28e1f7d69fc3b3 < 8ed9bff906cf8036531d1559f10e82733a52b41f

Linux / Linux

6.10

References

NVD ↗ CVE.org ↗ EPSS Data ↗

git.kernel.org: https://git.kernel.org/stable/c/22107402c2669b0163d43cc68901a2c4a59fa43a git.kernel.org: https://git.kernel.org/stable/c/314f1a6762b5d51b37784ed7dc701d4c3d893703 git.kernel.org: https://git.kernel.org/stable/c/da64b150e4b7bee615b33ab21f3137c31ec36922 git.kernel.org: https://git.kernel.org/stable/c/8ed9bff906cf8036531d1559f10e82733a52b41f