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CVE-2026-93219

clocksource/drivers/timer-sun4i: Advertise a real minimum delta

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.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version 12e1480bcb4920c1b02b3793cb48756497919a60
Version < 0cc4b14d7401d50e53a01f1554147ee075ee6943
Status affected
Version 12e1480bcb4920c1b02b3793cb48756497919a60
Version < 53a3bc024b8e5d284468cce84957cded5f859f98
Status affected
Version 12e1480bcb4920c1b02b3793cb48756497919a60
Version < 753a220084dfc4d737f2ab9eaddc9a01a397edd7
Status affected
Version 12e1480bcb4920c1b02b3793cb48756497919a60
Version < ebba4d0aeba0e8eb3a9676380fc2652de8ab1c44
Status affected
Version 12e1480bcb4920c1b02b3793cb48756497919a60
Version < 151eb52f8712017c8f7b00bb2305e8916cb9e3dc
Status affected
Version 12e1480bcb4920c1b02b3793cb48756497919a60
Version < bf38be01d43c4e4ca903aff7236d8486a950a252
Status affected
Version 12e1480bcb4920c1b02b3793cb48756497919a60
Version < f0efafcdf6eec1f3361bfd8c811420198f55c8bb
Status affected
Version 12e1480bcb4920c1b02b3793cb48756497919a60
Version < d21808328225ab8cee46885bf9a0dffcefbe630e
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusaffected
Version 3.13
Status affected
Version 0
Version < 3.13
Status unaffected
Version <= 5.10.*
Version 5.10.270
Status unaffected
Version <= 5.15.*
Version 5.15.221
Status unaffected
Version <= 6.1.*
Version 6.1.188
Status unaffected
Version <= 6.6.*
Version 6.6.157
Status unaffected
Version <= 6.12.*
Version 6.12.109
Status unaffected
Version <= 6.18.*
Version 6.18.50
Status unaffected
Version <= 7.2.*
Version 7.2.4
Status unaffected
Version <= *
Version 7.3-rc1
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 0.18% 0.064
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/0cc4b14d7401d50e53a01f1554147ee075ee6943
https://git.kernel.org/stable/c/53a3bc024b8e5d284468cce84957cded5f859f98
https://git.kernel.org/stable/c/753a220084dfc4d737f2ab9eaddc9a01a397edd7
https://git.kernel.org/stable/c/ebba4d0aeba0e8eb3a9676380fc2652de8ab1c44
https://git.kernel.org/stable/c/151eb52f8712017c8f7b00bb2305e8916cb9e3dc
https://git.kernel.org/stable/c/bf38be01d43c4e4ca903aff7236d8486a950a252
https://git.kernel.org/stable/c/f0efafcdf6eec1f3361bfd8c811420198f55c8bb
https://git.kernel.org/stable/c/d21808328225ab8cee46885bf9a0dffcefbe630e