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CVE-2026-53326

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

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.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version 13abb2b11ac3b6cb89822f152e770081893e4bc3
Version < 3cc90ea0dd0fb1f8db577dcdc027fc46c06049f6
Status affected
Version 0d2a64411b0974a469ff56e62441055147e5a194
Version < 5d95f6b267f3d7fe54f42a3b224bb4a3d3990b41
Status affected
Version c93859a52b0d6953cdaa17fd7fb46a6871b015cf
Version < 27335c50014102e9077b784ebd314954286afcab
Status affected
Version a460935022f512e167b4c5d4c12d85f89ba6aabd
Version < 44b8b03a9fb5c575548fc72c674653d6baba142a
Status affected
Version 06e0ae988f6e3499785c407429953ade19c1096b
Version < 7bc71bdb1c1526c7f02a6adab324394ff1327b0a
Status affected
Version 06e0ae988f6e3499785c407429953ade19c1096b
Version < 0d046ae106255cba5eb83b23f78ee93f3620247d
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusaffected
Version 6.19
Status affected
Version 0
Version < 6.19
Status unaffected
Version <= 7.0.*
Version 7.0.13
Status unaffected
Version <= *
Version 7.1
Status unaffected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.17% 0.069
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://git.kernel.org/stable/c/44b8b03a9fb5c575548fc72c674653d6baba142a
https://git.kernel.org/stable/c/7bc71bdb1c1526c7f02a6adab324394ff1327b0a
https://git.kernel.org/stable/c/0d046ae106255cba5eb83b23f78ee93f3620247d
https://git.kernel.org/stable/c/27335c50014102e9077b784ebd314954286afcab
https://git.kernel.org/stable/c/3cc90ea0dd0fb1f8db577dcdc027fc46c06049f6
https://git.kernel.org/stable/c/5d95f6b267f3d7fe54f42a3b224bb4a3d3990b41