{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-97995", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:18:58.209Z", "datePublished": "2026-09-25T10:23:26.307Z", "dateUpdated": "2026-10-19T09:12:02.162Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:12:02.162Z" }, "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." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/char/virtio_console.c" ], "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" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/char/virtio_console.c" ], "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" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.17", "versionEndExcluding": "5.10.271" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.17", "versionEndExcluding": "5.15.222" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.17", "versionEndExcluding": "6.1.189" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.17", "versionEndExcluding": "6.6.158" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.17", "versionEndExcluding": "6.12.111" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.17", "versionEndExcluding": "6.18.53" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.17", "versionEndExcluding": "7.2.7" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.17", "versionEndExcluding": "7.3" }, { "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" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/b1f39c2a676698cc64c8e105e08b25111a112ec6" }, { "url": "https://git.kernel.org/stable/c/e03522a990cd2e0f1a736eaa349a9df9ab8541c3" }, { "url": "https://git.kernel.org/stable/c/8f6cfc3eca79b8e108d0823756101e2f4f9d811f" }, { "url": "https://git.kernel.org/stable/c/2e40c69b9c3448b9c6609cd02013da593b2e123b" }, { "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" } } } }