{"id":"CVE-2026-97995","revision":"16613d84cb644ba7a0edef1152c600f4","records":[{"revision":"16613d84cb644ba7a0edef1152c600f4","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-97995","aliases":[],"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":0,"publishedAt":"2026-09-25T10:23:26.307+00:00","modifiedAt":"2026-10-19T09:12:02.162+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/char/virtio_console.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"a7a69ec0d8e4a58be7db88d33cbfa2912807bb2b\",\n                            \"lessThan\": \"b1f39c2a676698cc64c8e105e08b25111a112ec6\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"a7a69ec0d8e4a58be7db88d33cbfa2912807bb2b\",\n                            \"lessThan\": \"e03522a990cd2e0f1a736eaa349a9df9ab8541c3\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"a7a69ec0d8e4a58be7db88d33cbfa2912807bb2b\",\n                            \"lessThan\": \"8f6cfc3eca79b8e108d0823756101e2f4f9d811f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"a7a69ec0d8e4a58be7db88d33cbfa2912807bb2b\",\n                            \"lessThan\": \"2e40c69b9c3448b9c6609cd02013da593b2e123b\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"a7a69ec0d8e4a58be7db88d33cbfa2912807bb2b\",\n                            \"lessThan\": \"177ee901aa2bab02e7f1f8edbb814fd5e386ed62\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"a7a69ec0d8e4a58be7db88d33cbfa2912807bb2b\",\n                            \"lessThan\": \"a80c33488e0bbe642ed803b13a4ac8078a70b507\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"a7a69ec0d8e4a58be7db88d33cbfa2912807bb2b\",\n                            \"lessThan\": \"f620c40ea6862feed84deb105568b21ec53a7830\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"a7a69ec0d8e4a58be7db88d33cbfa2912807bb2b\",\n                            \"lessThan\": \"894f98e73983f37354214a89a3a7fd35bf9e3072\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"f92b16b815efe8207090a9b5a767618fd89542ca\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"d2bbfac82b7942afc5d8e564d7087835280df495\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"a88e13d9a092fbb772d380944b44eb549ef131fe\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"dd807a784fd36f4136516d5858efb6473dda422c\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"47cb14192bcbba3f15b1c3561e05e084e56fdef6\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"6b1c41a0f7183702abb7a104c6c7e196ad69a6b3\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"9037306163a6ba5587e4b5ca511ac7be4fb7295b\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3.16.60\",\n                            \"lessThan\": \"3.17\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"3.18.108\",\n                            \"lessThan\": \"3.19\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"4.1.52\",\n                            \"lessThan\": \"4.2\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"4.4.131\",\n                            \"lessThan\": \"4.5\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"4.9.98\",\n                            \"lessThan\": \"4.10\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"4.14.39\",\n                            \"lessThan\": \"4.15\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"4.16.7\",\n                            \"lessThan\": \"4.17\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/char/virtio_console.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"4.17\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"4.17\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.271\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.222\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.189\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.158\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.111\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.53\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.7\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/b1f39c2a676698cc64c8e105e08b25111a112ec6","https://git.kernel.org/stable/c/e03522a990cd2e0f1a736eaa349a9df9ab8541c3","https://git.kernel.org/stable/c/8f6cfc3eca79b8e108d0823756101e2f4f9d811f","https://git.kernel.org/stable/c/2e40c69b9c3448b9c6609cd02013da593b2e123b","https://git.kernel.org/stable/c/177ee901aa2bab02e7f1f8edbb814fd5e386ed62","https://git.kernel.org/stable/c/a80c33488e0bbe642ed803b13a4ac8078a70b507","https://git.kernel.org/stable/c/f620c40ea6862feed84deb105568b21ec53a7830","https://git.kernel.org/stable/c/894f98e73983f37354214a89a3a7fd35bf9e3072"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-97995","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-97995","identifiers":["CVE-2026-97995"]},"retained":false,"historicalAffected":[]}],"coverage":[]}