{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-93219",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-17T16:02:15.094Z",
        "datePublished": "2026-09-24T15:10:42.900Z",
        "dateUpdated": "2026-09-24T15:10:42.900Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-09-24T15:10:42.900Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "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."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/clocksource/timer-sun4i.c"
                    ],
                    "versions": [
                        {
                            "version": "12e1480bcb4920c1b02b3793cb48756497919a60",
                            "lessThan": "0cc4b14d7401d50e53a01f1554147ee075ee6943",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "12e1480bcb4920c1b02b3793cb48756497919a60",
                            "lessThan": "53a3bc024b8e5d284468cce84957cded5f859f98",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "12e1480bcb4920c1b02b3793cb48756497919a60",
                            "lessThan": "753a220084dfc4d737f2ab9eaddc9a01a397edd7",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "12e1480bcb4920c1b02b3793cb48756497919a60",
                            "lessThan": "ebba4d0aeba0e8eb3a9676380fc2652de8ab1c44",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "12e1480bcb4920c1b02b3793cb48756497919a60",
                            "lessThan": "151eb52f8712017c8f7b00bb2305e8916cb9e3dc",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "12e1480bcb4920c1b02b3793cb48756497919a60",
                            "lessThan": "bf38be01d43c4e4ca903aff7236d8486a950a252",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "12e1480bcb4920c1b02b3793cb48756497919a60",
                            "lessThan": "f0efafcdf6eec1f3361bfd8c811420198f55c8bb",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "12e1480bcb4920c1b02b3793cb48756497919a60",
                            "lessThan": "d21808328225ab8cee46885bf9a0dffcefbe630e",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/clocksource/timer-sun4i.c"
                    ],
                    "versions": [
                        {
                            "version": "3.13",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "3.13",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.270",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.221",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.188",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.157",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.109",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.50",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.4",
                            "lessThanOrEqual": "7.2.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.3-rc1",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.13",
                                    "versionEndExcluding": "5.10.270"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.13",
                                    "versionEndExcluding": "5.15.221"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.13",
                                    "versionEndExcluding": "6.1.188"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.13",
                                    "versionEndExcluding": "6.6.157"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.13",
                                    "versionEndExcluding": "6.12.109"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.13",
                                    "versionEndExcluding": "6.18.50"
                                },
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.13",
                                    "versionEndExcluding": "7.2.4"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.13",
                                    "versionEndExcluding": "7.3-rc1"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/0cc4b14d7401d50e53a01f1554147ee075ee6943"
                },
                {
                    "url": "https://git.kernel.org/stable/c/53a3bc024b8e5d284468cce84957cded5f859f98"
                },
                {
                    "url": "https://git.kernel.org/stable/c/753a220084dfc4d737f2ab9eaddc9a01a397edd7"
                },
                {
                    "url": "https://git.kernel.org/stable/c/ebba4d0aeba0e8eb3a9676380fc2652de8ab1c44"
                },
                {
                    "url": "https://git.kernel.org/stable/c/151eb52f8712017c8f7b00bb2305e8916cb9e3dc"
                },
                {
                    "url": "https://git.kernel.org/stable/c/bf38be01d43c4e4ca903aff7236d8486a950a252"
                },
                {
                    "url": "https://git.kernel.org/stable/c/f0efafcdf6eec1f3361bfd8c811420198f55c8bb"
                },
                {
                    "url": "https://git.kernel.org/stable/c/d21808328225ab8cee46885bf9a0dffcefbe630e"
                }
            ],
            "title": "clocksource/drivers/timer-sun4i: Advertise a real minimum delta",
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}