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CVE PROGRAM SOURCE RECORDUnscored

CVE-2026-53326

debugobjects: Don't call fill_pool() in early boot hardirq context

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: debugobjects: Don't call fill_pool() in early boot hardirq context When booting a debug PREEMPT_RT kernel on an ARM64 system, a "inconsistent {HARDIRQ-ON-W} -> {IN-HARDIRQ-W} usage" lockdep warning message was reported to the console. During early boot, interrupts are enabled before the scheduler is enabled. In this window (before SYSTEM_SCHEDULING is set) interrupts can fire and in the hard interrupt context handler attempt to fill the pool This can lead to a deadlock when the interrupt occurred when the interrupt hits a region which holds a lock that is required to be taken in the allocation path. Add a new can_fill_pool() helper and reorder the exception rule and forbid this scenario by excluding allocations from hard interrupt context.

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

  • 13abb2b11ac3b6cb89822f152e770081893e4bc3 to < 3cc90ea0dd0fb1f8db577dcdc027fc46c06049f6affected
  • 0d2a64411b0974a469ff56e62441055147e5a194 to < 5d95f6b267f3d7fe54f42a3b224bb4a3d3990b41affected
  • c93859a52b0d6953cdaa17fd7fb46a6871b015cf to < 27335c50014102e9077b784ebd314954286afcabaffected
  • a460935022f512e167b4c5d4c12d85f89ba6aabd to < 44b8b03a9fb5c575548fc72c674653d6baba142aaffected
  • 06e0ae988f6e3499785c407429953ade19c1096b to < 7bc71bdb1c1526c7f02a6adab324394ff1327b0aaffected
  • 06e0ae988f6e3499785c407429953ade19c1096b to < 0d046ae106255cba5eb83b23f78ee93f3620247daffected

Linux Linux

Default version status: affected

  • 6.19affected
  • 0 to < 6.19unaffected
  • 7.0.13 to ≤ 7.0.*unaffected
  • 7.1 to ≤ *unaffected

References