{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-46207",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-05-13T15:03:33.105Z",
        "datePublished": "2026-05-28T09:40:25.583Z",
        "dateUpdated": "2026-06-14T18:02:44.626Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-06-14T18:02:44.626Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nvsock/virtio: fix empty payload in tap skb for non-linear buffers\n\nFor non-linear skbs, virtio_transport_build_skb() goes through\nvirtio_transport_copy_nonlinear_skb() to copy the original payload\nin the new skb to be delivered to the vsockmon tap device.\nThis manually initializes an iov_iter but does not set iov_iter.count.\nSince the iov_iter is zero-initialized, the copy length is zero and no\npayload is actually copied to the monitor interface, leaving data\nun-initialized.\n\nFix this by removing the linear vs non-linear split and using\nskb_copy_datagram_iter() with iov_iter_kvec() for all cases, as\nvhost-vsock already does. This handles both linear and non-linear skbs,\nproperly initializes the iov_iter, and removes the now unused\nvirtio_transport_copy_nonlinear_skb().\n\nWhile touching this code, let's also check the return value of\nskb_copy_datagram_iter(), even though it's unlikely to fail."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/vmw_vsock/virtio_transport_common.c"
                    ],
                    "versions": [
                        {
                            "version": "4b0bf10eb077cb43c09746251ef3608d62c45667",
                            "lessThan": "06747f52ab157591cec7e5623a759473b66ef6f6",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "4b0bf10eb077cb43c09746251ef3608d62c45667",
                            "lessThan": "52da6a74ca3de0fcda60301096b71534b3b18641",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "4b0bf10eb077cb43c09746251ef3608d62c45667",
                            "lessThan": "378b131a25bd1a5ee27ca199fe486c299d5350c5",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "4b0bf10eb077cb43c09746251ef3608d62c45667",
                            "lessThan": "3a3e3d90cbc79600544536723911657730759af3",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/vmw_vsock/virtio_transport_common.c"
                    ],
                    "versions": [
                        {
                            "version": "6.7",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.7",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.90",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.32",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.0.9",
                            "lessThanOrEqual": "7.0.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1",
                            "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": "6.7",
                                    "versionEndExcluding": "6.12.90"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.7",
                                    "versionEndExcluding": "6.18.32"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.7",
                                    "versionEndExcluding": "7.0.9"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.7",
                                    "versionEndExcluding": "7.1"
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            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/06747f52ab157591cec7e5623a759473b66ef6f6"
                },
                {
                    "url": "https://git.kernel.org/stable/c/52da6a74ca3de0fcda60301096b71534b3b18641"
                },
                {
                    "url": "https://git.kernel.org/stable/c/378b131a25bd1a5ee27ca199fe486c299d5350c5"
                },
                {
                    "url": "https://git.kernel.org/stable/c/3a3e3d90cbc79600544536723911657730759af3"
                }
            ],
            "title": "vsock/virtio: fix empty payload in tap skb for non-linear buffers",
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}