{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-64103",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-07-19T07:54:57.034Z",
        "datePublished": "2026-07-19T15:40:07.372Z",
        "dateUpdated": "2026-07-19T15:40:07.372Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-07-19T15:40:07.372Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: isci: Fix use-after-free in device removal path\n\nThe ISCI completion tasklet is initialized in isci_host_alloc()\n(drivers/scsi/isci/init.c:496) and scheduled from both MSI-X and legacy\ninterrupt handlers (drivers/scsi/isci/host.c:223,613).\n\nisci_host_deinit() stops the controller and waits for stop completion,\nbut it never kills completion_tasklet before teardown continues. A\ntop-of-function tasklet_kill() is not sufficient here: interrupts are\nonly disabled when isci_host_stop_complete() runs, so until\nwait_for_stop() returns the IRQ handlers can still requeue the\ntasklet. The tasklet callback also re-enables interrupts after draining\ncompletions, so killing the tasklet before the source is quiesced leaves\nthe same race open.\n\nOnce wait_for_stop() returns, no further IRQ-driven scheduling can\noccur. Kill completion_tasklet there so teardown cannot race a queued\ntasklet running on a dead ihost. On remove or unload, the stale callback\ncan otherwise dereference ihost and touch ihost->smu_registers after the\nhost lifetime ends.\n\nA UML + KASAN analogue reproduced the failure class both with no\ntasklet_kill() and with tasklet_kill() placed before source quiesce, and\nstayed clean once the kill happened after quiescing the scheduling\nsource.\n\nThis mirrors commit f6ab594672d4 (\"scsi: aic94xx: fix use-after-free in\ndevice removal path\"), but ISCI needs the kill after wait_for_stop()."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/scsi/isci/host.c"
                    ],
                    "versions": [
                        {
                            "version": "6f231dda68080759f1aed3769896e94c73099f0f",
                            "lessThan": "1412995e10c74644b47f242aea6e4f3d4180e806",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6f231dda68080759f1aed3769896e94c73099f0f",
                            "lessThan": "a83d3e4daba40d49324cec1c51ed261e1ea48cf1",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6f231dda68080759f1aed3769896e94c73099f0f",
                            "lessThan": "ab2266601a875982f2d2033f41e070a6d5e615e2",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6f231dda68080759f1aed3769896e94c73099f0f",
                            "lessThan": "309c6058622d080fe8c2fab87c30da82d834d989",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6f231dda68080759f1aed3769896e94c73099f0f",
                            "lessThan": "cb9e72c50e6c81a5903f27e0b397ce8525d7539b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6f231dda68080759f1aed3769896e94c73099f0f",
                            "lessThan": "b9ff8631006233ba246828ac70409d2cb2da38d3",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6f231dda68080759f1aed3769896e94c73099f0f",
                            "lessThan": "6d40f2f103bb30f52f3dbadbe2c3fdf274a9763c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6f231dda68080759f1aed3769896e94c73099f0f",
                            "lessThan": "b52a8d52c3125ec9a93106ed816582368de34426",
                            "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/scsi/isci/host.c"
                    ],
                    "versions": [
                        {
                            "version": "3.0",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "3.0",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.258",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.209",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.175",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.142",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.92",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.34",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.0.11",
                            "lessThanOrEqual": "7.0.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1",
                            "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": "3.0",
                                    "versionEndExcluding": "5.10.258"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.0",
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            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/1412995e10c74644b47f242aea6e4f3d4180e806"
                },
                {
                    "url": "https://git.kernel.org/stable/c/a83d3e4daba40d49324cec1c51ed261e1ea48cf1"
                },
                {
                    "url": "https://git.kernel.org/stable/c/ab2266601a875982f2d2033f41e070a6d5e615e2"
                },
                {
                    "url": "https://git.kernel.org/stable/c/309c6058622d080fe8c2fab87c30da82d834d989"
                },
                {
                    "url": "https://git.kernel.org/stable/c/cb9e72c50e6c81a5903f27e0b397ce8525d7539b"
                },
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                    "url": "https://git.kernel.org/stable/c/b9ff8631006233ba246828ac70409d2cb2da38d3"
                },
                {
                    "url": "https://git.kernel.org/stable/c/6d40f2f103bb30f52f3dbadbe2c3fdf274a9763c"
                },
                {
                    "url": "https://git.kernel.org/stable/c/b52a8d52c3125ec9a93106ed816582368de34426"
                }
            ],
            "title": "scsi: isci: Fix use-after-free in device removal path",
            "x_generator": {
                "engine": "bippy-1.2.0"
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    }
}