{"api_version":"1","generated_at":"2026-07-20T14:42:19+00:00","cve":"CVE-2026-64103","urls":{"html":"https://cve.report/CVE-2026-64103","api":"https://cve.report/api/cve/CVE-2026-64103.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-64103","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-64103"},"summary":{"title":"scsi: isci: Fix use-after-free in device removal path","description":"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().","state":"PUBLISHED","assigner":"Linux","published_at":"2026-07-19 16:17:51","updated_at":"2026-07-19 16:17:51"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/b9ff8631006233ba246828ac70409d2cb2da38d3","name":"https://git.kernel.org/stable/c/b9ff8631006233ba246828ac70409d2cb2da38d3","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/1412995e10c74644b47f242aea6e4f3d4180e806","name":"https://git.kernel.org/stable/c/1412995e10c74644b47f242aea6e4f3d4180e806","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/309c6058622d080fe8c2fab87c30da82d834d989","name":"https://git.kernel.org/stable/c/309c6058622d080fe8c2fab87c30da82d834d989","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/b52a8d52c3125ec9a93106ed816582368de34426","name":"https://git.kernel.org/stable/c/b52a8d52c3125ec9a93106ed816582368de34426","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/6d40f2f103bb30f52f3dbadbe2c3fdf274a9763c","name":"https://git.kernel.org/stable/c/6d40f2f103bb30f52f3dbadbe2c3fdf274a9763c","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/ab2266601a875982f2d2033f41e070a6d5e615e2","name":"https://git.kernel.org/stable/c/ab2266601a875982f2d2033f41e070a6d5e615e2","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/cb9e72c50e6c81a5903f27e0b397ce8525d7539b","name":"https://git.kernel.org/stable/c/cb9e72c50e6c81a5903f27e0b397ce8525d7539b","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/a83d3e4daba40d49324cec1c51ed261e1ea48cf1","name":"https://git.kernel.org/stable/c/a83d3e4daba40d49324cec1c51ed261e1ea48cf1","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-64103","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64103","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6f231dda68080759f1aed3769896e94c73099f0f 1412995e10c74644b47f242aea6e4f3d4180e806 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6f231dda68080759f1aed3769896e94c73099f0f a83d3e4daba40d49324cec1c51ed261e1ea48cf1 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6f231dda68080759f1aed3769896e94c73099f0f ab2266601a875982f2d2033f41e070a6d5e615e2 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6f231dda68080759f1aed3769896e94c73099f0f 309c6058622d080fe8c2fab87c30da82d834d989 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6f231dda68080759f1aed3769896e94c73099f0f cb9e72c50e6c81a5903f27e0b397ce8525d7539b git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6f231dda68080759f1aed3769896e94c73099f0f b9ff8631006233ba246828ac70409d2cb2da38d3 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6f231dda68080759f1aed3769896e94c73099f0f 6d40f2f103bb30f52f3dbadbe2c3fdf274a9763c git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6f231dda68080759f1aed3769896e94c73099f0f b52a8d52c3125ec9a93106ed816582368de34426 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3.0","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 3.0 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.10.258 5.10.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.209 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.175 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.142 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.92 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.34 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0.11 7.0.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/scsi/isci/host.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"1412995e10c74644b47f242aea6e4f3d4180e806","status":"affected","version":"6f231dda68080759f1aed3769896e94c73099f0f","versionType":"git"},{"lessThan":"a83d3e4daba40d49324cec1c51ed261e1ea48cf1","status":"affected","version":"6f231dda68080759f1aed3769896e94c73099f0f","versionType":"git"},{"lessThan":"ab2266601a875982f2d2033f41e070a6d5e615e2","status":"affected","version":"6f231dda68080759f1aed3769896e94c73099f0f","versionType":"git"},{"lessThan":"309c6058622d080fe8c2fab87c30da82d834d989","status":"affected","version":"6f231dda68080759f1aed3769896e94c73099f0f","versionType":"git"},{"lessThan":"cb9e72c50e6c81a5903f27e0b397ce8525d7539b","status":"affected","version":"6f231dda68080759f1aed3769896e94c73099f0f","versionType":"git"},{"lessThan":"b9ff8631006233ba246828ac70409d2cb2da38d3","status":"affected","version":"6f231dda68080759f1aed3769896e94c73099f0f","versionType":"git"},{"lessThan":"6d40f2f103bb30f52f3dbadbe2c3fdf274a9763c","status":"affected","version":"6f231dda68080759f1aed3769896e94c73099f0f","versionType":"git"},{"lessThan":"b52a8d52c3125ec9a93106ed816582368de34426","status":"affected","version":"6f231dda68080759f1aed3769896e94c73099f0f","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/scsi/isci/host.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"3.0"},{"lessThan":"3.0","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.258","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.209","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.175","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.142","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.92","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.34","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.11","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.258","versionStartIncluding":"3.0","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.209","versionStartIncluding":"3.0","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.175","versionStartIncluding":"3.0","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.142","versionStartIncluding":"3.0","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.92","versionStartIncluding":"3.0","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.34","versionStartIncluding":"3.0","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.11","versionStartIncluding":"3.0","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1","versionStartIncluding":"3.0","vulnerable":true}],"negate":false,"operator":"OR"}]}],"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()."}],"providerMetadata":{"dateUpdated":"2026-07-19T15:40:07.372Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"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"},{"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"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-64103","datePublished":"2026-07-19T15:40:07.372Z","dateReserved":"2026-07-19T07:54:57.034Z","dateUpdated":"2026-07-19T15:40:07.372Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-07-19 16:17:51","lastModifiedDate":"2026-07-19 16:17:51","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"64103","Ordinal":"1","Title":"scsi: isci: Fix use-after-free in device removal path","CVE":"CVE-2026-64103","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"64103","Ordinal":"1","NoteData":"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().","Type":"Description","Title":"scsi: isci: Fix use-after-free in device removal path"}]}}}