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

CVE-2025-38335
MEDIUM 5.5

At a glance

Source
NVD
EPSS
EPSS 0.14 % · percentile 3 ()
State
PUBLISHED
Published
Updated
Assigner
Linux
NVD status
Analyzed

Description

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.

Weaknesses (CWE)

References

Scores

VersionScoreVectorScored by
CVSS 3.1MEDIUM 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HNVD · nvd@nist.gov (Primary)

European references

CERT-FR advisories

Affected configurations (NVD CPE)

Affected products

ProductVersions
Linux · Linuxaffected 019002f20cb5b9f78d39360aff244265d035e08a < 664e5a6f541ff226621487d1280d2ec28e86be28 ; affected 019002f20cb5b9f78d39360aff244265d035e08a < a8f01e51109f77229e426b57c5d19251b462c6aa ; affected 019002f20cb5b9f78d39360aff244265d035e08a < fa53beab4740c4e5fe969f218a379f9558be33dc ; affected 019002f20cb5b9f78d39360aff244265d035e08a < a7b79db25846459de63ca8974268f0c41c734c4b ; affected 019002f20cb5b9f78d39360aff244265d035e08a < ec8f5da79b425deef5aebacdd4fe645620cd4f0b ; affected 019002f20cb5b9f78d39360aff244265d035e08a < f4a8f561d08e39f7833d4a278ebfb12a41eef15f
Linux · Linuxaffected 5.13 ; unaffected 0 < 5.13 ; unaffected 5.15.190 ≤ 5.15.* ; unaffected 6.1.148 ≤ 6.1.* ; unaffected 6.6.101 ≤ 6.6.* ; unaffected 6.12.41 ≤ 6.12.*

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD