{"api_version":"1","generated_at":"2026-09-27T15:13:25+00:00","cve":"CVE-2026-97995","urls":{"html":"https://cve.report/CVE-2026-97995","api":"https://cve.report/api/cve/CVE-2026-97995.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-97995","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-97995"},"summary":{"title":"virtio_console: do not free control-out buffers on remove","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nvirtio_console: do not free control-out buffers on remove\n\n__send_control_msg() publishes &portdev->cpkt as the control-out\nvirtqueue cookie. remove_vqs() walks every virtqueue and passes leftover\ncookies to free_buf(), which treats them as struct port_buffer and\nreads sgpages.\n\nIf a control message is still on c_ovq when the device is unbound,\nfree_buf() reads past the ports_device object.\n\nKASAN reported slab-out-of-bounds in free_buf():\n\n\tfree_buf\n\tremove_vqs\n\tvirtcons_remove\n\tunbind_store\n\nThe object was the ports_device allocated in virtcons_probe().\n\nDrain c_ovq without freeing. The packet lives in portdev and is released\nwith it.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-25 11:17:27","updated_at":"2026-09-25 11:17:27"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/f620c40ea6862feed84deb105568b21ec53a7830","name":"https://git.kernel.org/stable/c/f620c40ea6862feed84deb105568b21ec53a7830","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/a80c33488e0bbe642ed803b13a4ac8078a70b507","name":"https://git.kernel.org/stable/c/a80c33488e0bbe642ed803b13a4ac8078a70b507","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/894f98e73983f37354214a89a3a7fd35bf9e3072","name":"https://git.kernel.org/stable/c/894f98e73983f37354214a89a3a7fd35bf9e3072","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/177ee901aa2bab02e7f1f8edbb814fd5e386ed62","name":"https://git.kernel.org/stable/c/177ee901aa2bab02e7f1f8edbb814fd5e386ed62","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-97995","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-97995","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected a7a69ec0d8e4a58be7db88d33cbfa2912807bb2b 177ee901aa2bab02e7f1f8edbb814fd5e386ed62 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected a7a69ec0d8e4a58be7db88d33cbfa2912807bb2b a80c33488e0bbe642ed803b13a4ac8078a70b507 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected a7a69ec0d8e4a58be7db88d33cbfa2912807bb2b f620c40ea6862feed84deb105568b21ec53a7830 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected a7a69ec0d8e4a58be7db88d33cbfa2912807bb2b 894f98e73983f37354214a89a3a7fd35bf9e3072 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f92b16b815efe8207090a9b5a767618fd89542ca git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected d2bbfac82b7942afc5d8e564d7087835280df495 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected a88e13d9a092fbb772d380944b44eb549ef131fe git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected dd807a784fd36f4136516d5858efb6473dda422c git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 47cb14192bcbba3f15b1c3561e05e084e56fdef6 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6b1c41a0f7183702abb7a104c6c7e196ad69a6b3 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 9037306163a6ba5587e4b5ca511ac7be4fb7295b git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3.16.60 3.17 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3.18.108 3.19 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4.1.52 4.2 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4.4.131 4.5 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4.9.98 4.10 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4.14.39 4.15 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4.16.7 4.17 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4.17","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 4.17 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":{"cve_year":"2026","cve_id":"97995","cve":"CVE-2026-97995","epss":"0.001680000","percentile":"0.054160000","score_date":"2026-09-26","updated_at":"2026-09-27 00:04:20"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/char/virtio_console.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"177ee901aa2bab02e7f1f8edbb814fd5e386ed62","status":"affected","version":"a7a69ec0d8e4a58be7db88d33cbfa2912807bb2b","versionType":"git"},{"lessThan":"a80c33488e0bbe642ed803b13a4ac8078a70b507","status":"affected","version":"a7a69ec0d8e4a58be7db88d33cbfa2912807bb2b","versionType":"git"},{"lessThan":"f620c40ea6862feed84deb105568b21ec53a7830","status":"affected","version":"a7a69ec0d8e4a58be7db88d33cbfa2912807bb2b","versionType":"git"},{"lessThan":"894f98e73983f37354214a89a3a7fd35bf9e3072","status":"affected","version":"a7a69ec0d8e4a58be7db88d33cbfa2912807bb2b","versionType":"git"},{"status":"affected","version":"f92b16b815efe8207090a9b5a767618fd89542ca","versionType":"git"},{"status":"affected","version":"d2bbfac82b7942afc5d8e564d7087835280df495","versionType":"git"},{"status":"affected","version":"a88e13d9a092fbb772d380944b44eb549ef131fe","versionType":"git"},{"status":"affected","version":"dd807a784fd36f4136516d5858efb6473dda422c","versionType":"git"},{"status":"affected","version":"47cb14192bcbba3f15b1c3561e05e084e56fdef6","versionType":"git"},{"status":"affected","version":"6b1c41a0f7183702abb7a104c6c7e196ad69a6b3","versionType":"git"},{"status":"affected","version":"9037306163a6ba5587e4b5ca511ac7be4fb7295b","versionType":"git"},{"lessThan":"3.17","status":"affected","version":"3.16.60","versionType":"semver"},{"lessThan":"3.19","status":"affected","version":"3.18.108","versionType":"semver"},{"lessThan":"4.2","status":"affected","version":"4.1.52","versionType":"semver"},{"lessThan":"4.5","status":"affected","version":"4.4.131","versionType":"semver"},{"lessThan":"4.10","status":"affected","version":"4.9.98","versionType":"semver"},{"lessThan":"4.15","status":"affected","version":"4.14.39","versionType":"semver"},{"lessThan":"4.17","status":"affected","version":"4.16.7","versionType":"semver"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/char/virtio_console.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"4.17"},{"lessThan":"4.17","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":"4.17","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.53","versionStartIncluding":"4.17","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.7","versionStartIncluding":"4.17","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc3","versionStartIncluding":"4.17","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.16.60","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.18.108","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.1.52","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.4.131","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9.98","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.14.39","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.16.7","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nvirtio_console: do not free control-out buffers on remove\n\n__send_control_msg() publishes &portdev->cpkt as the control-out\nvirtqueue cookie. remove_vqs() walks every virtqueue and passes leftover\ncookies to free_buf(), which treats them as struct port_buffer and\nreads sgpages.\n\nIf a control message is still on c_ovq when the device is unbound,\nfree_buf() reads past the ports_device object.\n\nKASAN reported slab-out-of-bounds in free_buf():\n\n\tfree_buf\n\tremove_vqs\n\tvirtcons_remove\n\tunbind_store\n\nThe object was the ports_device allocated in virtcons_probe().\n\nDrain c_ovq without freeing. The packet lives in portdev and is released\nwith it."}],"providerMetadata":{"dateUpdated":"2026-09-25T10:23:26.307Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/177ee901aa2bab02e7f1f8edbb814fd5e386ed62"},{"url":"https://git.kernel.org/stable/c/a80c33488e0bbe642ed803b13a4ac8078a70b507"},{"url":"https://git.kernel.org/stable/c/f620c40ea6862feed84deb105568b21ec53a7830"},{"url":"https://git.kernel.org/stable/c/894f98e73983f37354214a89a3a7fd35bf9e3072"}],"title":"virtio_console: do not free control-out buffers on remove","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-97995","datePublished":"2026-09-25T10:23:26.307Z","dateReserved":"2026-09-25T10:18:58.209Z","dateUpdated":"2026-09-25T10:23:26.307Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-25 11:17:27","lastModifiedDate":"2026-09-25 11:17:27","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"97995","Ordinal":"1","Title":"virtio_console: do not free control-out buffers on remove","CVE":"CVE-2026-97995","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"97995","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nvirtio_console: do not free control-out buffers on remove\n\n__send_control_msg() publishes &portdev->cpkt as the control-out\nvirtqueue cookie. remove_vqs() walks every virtqueue and passes leftover\ncookies to free_buf(), which treats them as struct port_buffer and\nreads sgpages.\n\nIf a control message is still on c_ovq when the device is unbound,\nfree_buf() reads past the ports_device object.\n\nKASAN reported slab-out-of-bounds in free_buf():\n\n\tfree_buf\n\tremove_vqs\n\tvirtcons_remove\n\tunbind_store\n\nThe object was the ports_device allocated in virtcons_probe().\n\nDrain c_ovq without freeing. The packet lives in portdev and is released\nwith it.","Type":"Description","Title":"virtio_console: do not free control-out buffers on remove"}]}}}