UNKNOWN NVD
CVE-2026-93219
In the Linux kernel, the following vulnerability has been resolved: clocksource/drivers/timer-sun4i: Advertise a real minimum delta sun4i_clkevt_next_event()
In the Linux kernel, the following vulnerability has been resolved:
clocksource/drivers/timer-sun4i: Advertise a real minimum delta
sun4i_clkevt_next_event() compensates for the timer stop/start
synchronization delay by programming evt - TIMER_SYNC_TICKS into the
hardware interval register. The clockevent device currently advertises
TIMER_SYNC_TICKS as min_delta_ticks, so the clockevents core is allowed
to call set_next_event() with evt == TIMER_SYNC_TICKS.
That programs a zero-tick interval. With oneshot/highres/nohz timer
operation this can leave the next event stuck, which was observed as a
boot hang on Allwinner D1 after the clockevents core started reusing
forced minimum-delta events.
Advertise one extra tick instead, so the smallest event accepted by the
core still programs at least one hardware tick after the synchronization
compensation.
References
- https://git.kernel.org/stable/c/0cc4b14d7401d50e53a01f1554147ee075ee6943
- https://git.kernel.org/stable/c/151eb52f8712017c8f7b00bb2305e8916cb9e3dc
- https://git.kernel.org/stable/c/53a3bc024b8e5d284468cce84957cded5f859f98
- https://git.kernel.org/stable/c/753a220084dfc4d737f2ab9eaddc9a01a397edd7
- https://git.kernel.org/stable/c/bf38be01d43c4e4ca903aff7236d8486a950a252
This unknown severity vulnerability was published on 2026-09-24 via NVD.
vulnfeed aggregates 11976 vulnerabilities from NVD, CISA KEV,
Ubuntu, Debian, Red Hat, Kubernetes, Exploit-DB, OSS-Security, GitHub and OpenStack — updated every 4 hours.