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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-93219
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-24 16:17:17 UTC
Updated2026-09-24 16:17:17 UTC
DescriptionIn 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.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 12e1480bcb4920c1b02b3793cb48756497919a60 0cc4b14d7401d50e53a01f1554147ee075ee6943 git Not specified
CNA Linux Linux affected 12e1480bcb4920c1b02b3793cb48756497919a60 53a3bc024b8e5d284468cce84957cded5f859f98 git Not specified
CNA Linux Linux affected 12e1480bcb4920c1b02b3793cb48756497919a60 753a220084dfc4d737f2ab9eaddc9a01a397edd7 git Not specified
CNA Linux Linux affected 12e1480bcb4920c1b02b3793cb48756497919a60 ebba4d0aeba0e8eb3a9676380fc2652de8ab1c44 git Not specified
CNA Linux Linux affected 12e1480bcb4920c1b02b3793cb48756497919a60 151eb52f8712017c8f7b00bb2305e8916cb9e3dc git Not specified
CNA Linux Linux affected 12e1480bcb4920c1b02b3793cb48756497919a60 bf38be01d43c4e4ca903aff7236d8486a950a252 git Not specified
CNA Linux Linux affected 12e1480bcb4920c1b02b3793cb48756497919a60 f0efafcdf6eec1f3361bfd8c811420198f55c8bb git Not specified
CNA Linux Linux affected 12e1480bcb4920c1b02b3793cb48756497919a60 d21808328225ab8cee46885bf9a0dffcefbe630e git Not specified
CNA Linux Linux affected 3.13 Not specified
CNA Linux Linux unaffected 3.13 semver Not specified
CNA Linux Linux unaffected 5.10.270 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.221 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.188 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.157 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.109 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.50 6.18.* semver Not specified
CNA Linux Linux unaffected 7.2.4 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3-rc1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/ebba4d0aeba0e8eb3a9676380fc2652de8ab1c44 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/bf38be01d43c4e4ca903aff7236d8486a950a252 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/753a220084dfc4d737f2ab9eaddc9a01a397edd7 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/f0efafcdf6eec1f3361bfd8c811420198f55c8bb 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/d21808328225ab8cee46885bf9a0dffcefbe630e 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/53a3bc024b8e5d284468cce84957cded5f859f98 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/0cc4b14d7401d50e53a01f1554147ee075ee6943 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/151eb52f8712017c8f7b00bb2305e8916cb9e3dc 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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