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CVE PROGRAM SOURCE RECORDUnscored

CVE-2026-90304

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

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Status
Published
Published
Updated
Assigning organization
Linux

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • c6e61c06d6061750597e79c598acb5dead44c35b to < 8d7cbc6df9632d334b21c4be66ccdde76a08fb13affected
  • c6e61c06d6061750597e79c598acb5dead44c35b to < e79ca91165d4fd18549c536abdb86101e889052faffected

Linux Linux

Default version status: affected

  • 7.1affected
  • 0 to < 7.1unaffected
  • 7.2.6 to ≤ 7.2.*unaffected
  • 7.3 to ≤ *unaffected

References