{"api_version":"1","generated_at":"2026-09-26T23:33:53+00:00","cve":"CVE-2026-97986","urls":{"html":"https://cve.report/CVE-2026-97986","api":"https://cve.report/api/cve/CVE-2026-97986.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-97986","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-97986"},"summary":{"title":"virtio_input: stop callbacks before unregistering input device","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nvirtio_input: stop callbacks before unregistering input device\n\nvirtinput_remove() unregisters the input device before resetting the\nvirtio device. virtinput_recv_events() drops vi->lock around input_event(),\nso clearing vi->ready does not stop a callback that passed the entry check.\nIt can still use vi->idev, requeue buffers and kick the queue.\n\nReset first, as virtinput_freeze() already does. With the preceding core\nchange, reset waits for callbacks before input_unregister_device() can\nfree vi->idev. Recheck vi->ready after taking the lock again: keep draining\ncompleted events so an input packet is not truncated, but stop requeueing\nbuffers and kicking the queue.\n\nWith evdev attached, input_unregister_handle() currently waits for an RCU\ngrace period, which also waits out IRQ callbacks. This masks the lifetime\nbug on PCI and MMIO, but does not protect sleepable callbacks on other\ntransports.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-25 11:17:26","updated_at":"2026-09-25 11:17:26"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/5378f7945856a5ed88e6f9850bc7a68f54090135","name":"https://git.kernel.org/stable/c/5378f7945856a5ed88e6f9850bc7a68f54090135","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/8226aeee9b9a94cd699fbb51cb230feff46cfaf2","name":"https://git.kernel.org/stable/c/8226aeee9b9a94cd699fbb51cb230feff46cfaf2","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/a3ba86a270dd87460759214046dc7cbd409ac711","name":"https://git.kernel.org/stable/c/a3ba86a270dd87460759214046dc7cbd409ac711","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/d7808b37da0a619cf1fa541c2384e783fecc2480","name":"https://git.kernel.org/stable/c/d7808b37da0a619cf1fa541c2384e783fecc2480","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-97986","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-97986","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 271c865161c57cfabca45b93eaa712b19da365bc 8226aeee9b9a94cd699fbb51cb230feff46cfaf2 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 271c865161c57cfabca45b93eaa712b19da365bc a3ba86a270dd87460759214046dc7cbd409ac711 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 271c865161c57cfabca45b93eaa712b19da365bc 5378f7945856a5ed88e6f9850bc7a68f54090135 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 271c865161c57cfabca45b93eaa712b19da365bc d7808b37da0a619cf1fa541c2384e783fecc2480 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4.1","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 4.1 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.111 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.53 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.7 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc3 * 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/virtio/virtio_input.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"8226aeee9b9a94cd699fbb51cb230feff46cfaf2","status":"affected","version":"271c865161c57cfabca45b93eaa712b19da365bc","versionType":"git"},{"lessThan":"a3ba86a270dd87460759214046dc7cbd409ac711","status":"affected","version":"271c865161c57cfabca45b93eaa712b19da365bc","versionType":"git"},{"lessThan":"5378f7945856a5ed88e6f9850bc7a68f54090135","status":"affected","version":"271c865161c57cfabca45b93eaa712b19da365bc","versionType":"git"},{"lessThan":"d7808b37da0a619cf1fa541c2384e783fecc2480","status":"affected","version":"271c865161c57cfabca45b93eaa712b19da365bc","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/virtio/virtio_input.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"4.1"},{"lessThan":"4.1","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.111","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.53","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.7","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc3","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.111","versionStartIncluding":"4.1","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.53","versionStartIncluding":"4.1","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.7","versionStartIncluding":"4.1","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc3","versionStartIncluding":"4.1","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nvirtio_input: stop callbacks before unregistering input device\n\nvirtinput_remove() unregisters the input device before resetting the\nvirtio device. virtinput_recv_events() drops vi->lock around input_event(),\nso clearing vi->ready does not stop a callback that passed the entry check.\nIt can still use vi->idev, requeue buffers and kick the queue.\n\nReset first, as virtinput_freeze() already does. With the preceding core\nchange, reset waits for callbacks before input_unregister_device() can\nfree vi->idev. Recheck vi->ready after taking the lock again: keep draining\ncompleted events so an input packet is not truncated, but stop requeueing\nbuffers and kicking the queue.\n\nWith evdev attached, input_unregister_handle() currently waits for an RCU\ngrace period, which also waits out IRQ callbacks. This masks the lifetime\nbug on PCI and MMIO, but does not protect sleepable callbacks on other\ntransports."}],"providerMetadata":{"dateUpdated":"2026-09-25T10:23:20.801Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/8226aeee9b9a94cd699fbb51cb230feff46cfaf2"},{"url":"https://git.kernel.org/stable/c/a3ba86a270dd87460759214046dc7cbd409ac711"},{"url":"https://git.kernel.org/stable/c/5378f7945856a5ed88e6f9850bc7a68f54090135"},{"url":"https://git.kernel.org/stable/c/d7808b37da0a619cf1fa541c2384e783fecc2480"}],"title":"virtio_input: stop callbacks before unregistering input device","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-97986","datePublished":"2026-09-25T10:23:20.801Z","dateReserved":"2026-09-25T10:18:58.208Z","dateUpdated":"2026-09-25T10:23:20.801Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-25 11:17:26","lastModifiedDate":"2026-09-25 11:17:26","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"97986","Ordinal":"1","Title":"virtio_input: stop callbacks before unregistering input device","CVE":"CVE-2026-97986","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"97986","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nvirtio_input: stop callbacks before unregistering input device\n\nvirtinput_remove() unregisters the input device before resetting the\nvirtio device. virtinput_recv_events() drops vi->lock around input_event(),\nso clearing vi->ready does not stop a callback that passed the entry check.\nIt can still use vi->idev, requeue buffers and kick the queue.\n\nReset first, as virtinput_freeze() already does. With the preceding core\nchange, reset waits for callbacks before input_unregister_device() can\nfree vi->idev. Recheck vi->ready after taking the lock again: keep draining\ncompleted events so an input packet is not truncated, but stop requeueing\nbuffers and kicking the queue.\n\nWith evdev attached, input_unregister_handle() currently waits for an RCU\ngrace period, which also waits out IRQ callbacks. This masks the lifetime\nbug on PCI and MMIO, but does not protect sleepable callbacks on other\ntransports.","Type":"Description","Title":"virtio_input: stop callbacks before unregistering input device"}]}}}