Riskcovery

CVE-2026-90304

ARM: 9484/1: enable interrupts when unhandled user faults are triggered

State
Published
Severity
Not scored
Published
Sep 17, 2026
Updated
Oct 19, 2026
Reserved
Sep 11, 2026

Read the record on cve.org

Description

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

ARM: 9484/1: enable interrupts when unhandled user faults are triggered

PREEMPT_RT requires interrupts to be enabled when sending signals.

When do_DataAbort()/do_PrefetchAbort() triggers unhandled user faults, that is `inf->fn()` return a non-zero value, and the interrupts are not enabled within the hook function, force_sig_fault() will be called with interrupts disabled.

This can be triggered by user programs executing the bkpt instruction, with kernel config CONFIG_PERF_EVENTS=n.

Enable interrupts in do_DataAbort()/do_PrefetchAbort() when unhandled user faults are triggered to fix the issue.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • c6e61c06d6061750597e79c598acb5dead44c35b to before 8d7cbc6df9632d334b21c4be66ccdde76a08fb13Affected
  • c6e61c06d6061750597e79c598acb5dead44c35b to before e79ca91165d4fd18549c536abdb86101e889052fAffected
LinuxLinux
  • 7.1Affected
  • before 7.1Not affected
  • 7.2.6 through 7.2.*Not affected
  • 7.3 and laterNot affected

References

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