🛡️ AZL-64896 — kernel

⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

CVE-2025-38335 affecting package kernel for versions less than 6.6.104.2-1

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

Input: gpio-keys - fix a sleep while atomic with PREEMPT_RT

When enabling PREEMPT_RT, the gpio_keys_irq_timer() callback runs in

hard irq context, but the input_event() takes a spin_lock, which isn't

allowed there as it is converted to a rt_spin_lock().

[ 4054.289999] BUG: sleeping function called from invalid context at kernel/locking/spinlock_rt.c:48

[ 4054.290028] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 0, name: swapper/0

...

[ 4054.290195] __might_resched+0x13c/0x1f4

[ 4054.290209] rt_spin_lock+0x54/0x11c

[ 4054.290219] input_event+0x48/0x80

[ 4054.290230] gpio_keys_irq_timer+0x4c/0x78

[ 4054.290243] __hrtimer_run_queues+0x1a4/0x438

[ 4054.290257] hrtimer_interrupt+0xe4/0x240

[ 4054.290269] arch_timer_handler_phys+0x2c/0x44

[ 4054.290283] handle_percpu_devid_irq+0x8c/0x14c

[ 4054.290297] handle_irq_desc+0x40/0x58

[ 4054.290307] generic_handle_domain_irq+0x1c/0x28

[ 4054.290316] gic_handle_irq+0x44/0xcc

Considering the gpio_keys_irq_isr() can run in any context, e.g. it can

be threaded, it seems there's no point in requesting the timer isr to

run in hard irq context.

Relax the hrtimer not to use the hard context.

Affected software

AZL-64896 is recorded against 1 package.

  • kernel (fixed in 6.6.104.2-1)

Timeline and source

Published on 10 July 2025 and last revised on 21 April 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

nvd.nist.gov (Web)

Details

Severity Unknown
CVSS Score N/A
CVSS Vector N/A
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2025-07-10
Updated 2026-08-12
Modified 2026-04-21
Fix URL N/A

Affected Packages

Software From version Fixed in
kernel — 6.6.104.2-1

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