{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "12e1480bcb4920c1b02b3793cb48756497919a60"
            },
            {
              "fixed": "0cc4b14d7401d50e53a01f1554147ee075ee6943"
            },
            {
              "fixed": "53a3bc024b8e5d284468cce84957cded5f859f98"
            },
            {
              "fixed": "753a220084dfc4d737f2ab9eaddc9a01a397edd7"
            },
            {
              "fixed": "ebba4d0aeba0e8eb3a9676380fc2652de8ab1c44"
            },
            {
              "fixed": "151eb52f8712017c8f7b00bb2305e8916cb9e3dc"
            },
            {
              "fixed": "bf38be01d43c4e4ca903aff7236d8486a950a252"
            },
            {
              "fixed": "f0efafcdf6eec1f3361bfd8c811420198f55c8bb"
            },
            {
              "fixed": "d21808328225ab8cee46885bf9a0dffcefbe630e"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.13.0"
            },
            {
              "fixed": "5.10.270"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.221"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.188"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.157"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.109"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.50"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93219.json"
  },
  "details": "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 - 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.",
  "id": "CVE-2026-93219",
  "modified": "2026-09-26T03:31:00.210316468Z",
  "published": "2026-09-24T15:10:42.900Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0cc4b14d7401d50e53a01f1554147ee075ee6943"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/151eb52f8712017c8f7b00bb2305e8916cb9e3dc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/53a3bc024b8e5d284468cce84957cded5f859f98"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/753a220084dfc4d737f2ab9eaddc9a01a397edd7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bf38be01d43c4e4ca903aff7236d8486a950a252"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d21808328225ab8cee46885bf9a0dffcefbe630e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ebba4d0aeba0e8eb3a9676380fc2652de8ab1c44"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f0efafcdf6eec1f3361bfd8c811420198f55c8bb"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93219.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-93219"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "clocksource/drivers/timer-sun4i: Advertise a real minimum delta"
}