{"schema":"threatline.record/2","record":{"id":"CVE-2026-97995","aliases":[],"summary":"virtio_console: do not free control-out buffers on remove","details":"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.","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97995","source_modified_at":"2026-10-19T09:12:02.162Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"a7a69ec0d8e4a58be7db88d33cbfa2912807bb2b","lessThan":"b1f39c2a676698cc64c8e105e08b25111a112ec6","status":"affected","versionType":"git"},{"version":"a7a69ec0d8e4a58be7db88d33cbfa2912807bb2b","lessThan":"e03522a990cd2e0f1a736eaa349a9df9ab8541c3","status":"affected","versionType":"git"},{"version":"a7a69ec0d8e4a58be7db88d33cbfa2912807bb2b","lessThan":"8f6cfc3eca79b8e108d0823756101e2f4f9d811f","status":"affected","versionType":"git"},{"version":"a7a69ec0d8e4a58be7db88d33cbfa2912807bb2b","lessThan":"2e40c69b9c3448b9c6609cd02013da593b2e123b","status":"affected","versionType":"git"},{"version":"a7a69ec0d8e4a58be7db88d33cbfa2912807bb2b","lessThan":"177ee901aa2bab02e7f1f8edbb814fd5e386ed62","status":"affected","versionType":"git"},{"version":"a7a69ec0d8e4a58be7db88d33cbfa2912807bb2b","lessThan":"a80c33488e0bbe642ed803b13a4ac8078a70b507","status":"affected","versionType":"git"},{"version":"a7a69ec0d8e4a58be7db88d33cbfa2912807bb2b","lessThan":"f620c40ea6862feed84deb105568b21ec53a7830","status":"affected","versionType":"git"},{"version":"a7a69ec0d8e4a58be7db88d33cbfa2912807bb2b","lessThan":"894f98e73983f37354214a89a3a7fd35bf9e3072","status":"affected","versionType":"git"},{"version":"f92b16b815efe8207090a9b5a767618fd89542ca","status":"affected","versionType":"git"},{"version":"d2bbfac82b7942afc5d8e564d7087835280df495","status":"affected","versionType":"git"},{"version":"a88e13d9a092fbb772d380944b44eb549ef131fe","status":"affected","versionType":"git"},{"version":"dd807a784fd36f4136516d5858efb6473dda422c","status":"affected","versionType":"git"},{"version":"47cb14192bcbba3f15b1c3561e05e084e56fdef6","status":"affected","versionType":"git"},{"version":"6b1c41a0f7183702abb7a104c6c7e196ad69a6b3","status":"affected","versionType":"git"},{"version":"9037306163a6ba5587e4b5ca511ac7be4fb7295b","status":"affected","versionType":"git"},{"version":"3.16.60","lessThan":"3.17","status":"affected","versionType":"semver"},{"version":"3.18.108","lessThan":"3.19","status":"affected","versionType":"semver"},{"version":"4.1.52","lessThan":"4.2","status":"affected","versionType":"semver"},{"version":"4.4.131","lessThan":"4.5","status":"affected","versionType":"semver"},{"version":"4.9.98","lessThan":"4.10","status":"affected","versionType":"semver"},{"version":"4.14.39","lessThan":"4.15","status":"affected","versionType":"semver"},{"version":"4.16.7","lessThan":"4.17","status":"affected","versionType":"semver"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97995","source_modified_at":"2026-10-19T09:12:02.162Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"4.17","status":"affected"},{"version":"0","lessThan":"4.17","status":"unaffected","versionType":"semver"},{"version":"5.10.271","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.222","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.189","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.158","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.111","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.53","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.7","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}],"defaultStatus":"affected"}],"fixed_versions":[{"source":"CVE 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