{"id":"CVE-2026-93219","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nclocksource/drivers/timer-sun4i: Advertise a real minimum delta\n\nsun4i_clkevt_next_event() compensates for the timer stop/start\nsynchronization delay by programming evt…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nclocksource/drivers/timer-sun4i: Advertise a real minimum delta\n\nsun4i_clkevt_next_event() compensates for the timer stop/start\nsynchronization delay by programming evt…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 12e1480bcb4920c1b02b3793cb48756497919a60 < 0cc4b14d7401d50e53a01f1554147ee075ee6943","Linux >= 12e1480bcb4920c1b02b3793cb48756497919a60 < 53a3bc024b8e5d284468cce84957cded5f859f98","Linux >= 12e1480bcb4920c1b02b3793cb48756497919a60 < 753a220084dfc4d737f2ab9eaddc9a01a397edd7","Linux >= 12e1480bcb4920c1b02b3793cb48756497919a60 < ebba4d0aeba0e8eb3a9676380fc2652de8ab1c44","Linux >= 12e1480bcb4920c1b02b3793cb48756497919a60 < 151eb52f8712017c8f7b00bb2305e8916cb9e3dc","Linux >= 12e1480bcb4920c1b02b3793cb48756497919a60 < bf38be01d43c4e4ca903aff7236d8486a950a252","Linux >= 12e1480bcb4920c1b02b3793cb48756497919a60 < f0efafcdf6eec1f3361bfd8c811420198f55c8bb","Linux >= 12e1480bcb4920c1b02b3793cb48756497919a60 < d21808328225ab8cee46885bf9a0dffcefbe630e","Linux 3.13"],"published":"2026-09-24","updated":"2026-09-24","sourceUpdated":"2026-09-24T16:17:17.030","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-93219","references":[{"url":"https://git.kernel.org/stable/c/0cc4b14d7401d50e53a01f1554147ee075ee6943","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/151eb52f8712017c8f7b00bb2305e8916cb9e3dc","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/53a3bc024b8e5d284468cce84957cded5f859f98","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/753a220084dfc4d737f2ab9eaddc9a01a397edd7","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/bf38be01d43c4e4ca903aff7236d8486a950a252","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/d21808328225ab8cee46885bf9a0dffcefbe630e","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/ebba4d0aeba0e8eb3a9676380fc2652de8ab1c44","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/f0efafcdf6eec1f3361bfd8c811420198f55c8bb","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-24T15:45:56.668Z","slug":"CVE-2026-93219","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nclocksource/drivers/timer-sun4i: Advertise a real minimum delta\n\nsun4i_clkevt_next_event() compensates for the timer stop/start\nsynchronization delay by programming evt - TIMER_SYNC_TICKS into the\nhardware interval register. The clockevent device currently advertises\nTIMER_SYNC_TICKS as min_delta_ticks, so the clockevents core is allowed\nto call set_next_event() with evt == TIMER_SYNC_TICKS.\n\nThat programs a zero-tick interval. With oneshot/highres/nohz timer\noperation this can leave the next event stuck, which was observed as a\nboot hang on Allwinner D1 after the clockevents core started reusing\nforced minimum-delta events.\n\nAdvertise one extra tick instead, so the smallest event accepted by the\ncore still programs at least one hardware tick after the synchronization\ncompensation.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}