{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-74705",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-08-15T05:44:03.927Z",
        "datePublished": "2026-08-22T15:33:04.110Z",
        "dateUpdated": "2026-08-22T15:33:04.110Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-22T15:33:04.110Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nudp: fix potential use-after-free in tunnel segmentation\n\n__skb_udp_tunnel_segment() gets the UDP header before ensuring the\ntunnel header is in the skb head. If the pull reallocates skb->head,\nthe saved UDP header pointer is no longer valid.\n\nGet the UDP header after the pull to avoid a potential use-after-free."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/ipv4/udp_offload.c"
                    ],
                    "versions": [
                        {
                            "version": "dbef491ebe7f3a4fb1b9111878b86a426fd540b7",
                            "lessThan": "6a733a38b983d8c2e222f13968209010cf44de87",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "dbef491ebe7f3a4fb1b9111878b86a426fd540b7",
                            "lessThan": "19d89b13a43640b2da2f277ee462d919d988cb6f",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "dbef491ebe7f3a4fb1b9111878b86a426fd540b7",
                            "lessThan": "b3df61bb745eb5201eac22679a2839d4ccbf3442",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "dbef491ebe7f3a4fb1b9111878b86a426fd540b7",
                            "lessThan": "1ae134c012e10384cdac420b5cc6e0615cde0b55",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "dbef491ebe7f3a4fb1b9111878b86a426fd540b7",
                            "lessThan": "5161e67c561c4f28a5d9335a6e859b02511de92b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "dbef491ebe7f3a4fb1b9111878b86a426fd540b7",
                            "lessThan": "64d322c288577793eedd352b96ef75234ed380fe",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "dbef491ebe7f3a4fb1b9111878b86a426fd540b7",
                            "lessThan": "588d4a6795d99d080f74ef0b5f391ea8c453ae5d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "dbef491ebe7f3a4fb1b9111878b86a426fd540b7",
                            "lessThan": "d0f86fb36eb260abd10007b62c9dcc1028e03e61",
                            "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/ipv4/udp_offload.c"
                    ],
                    "versions": [
                        {
                            "version": "4.6",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.6",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.265",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.216",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.183",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.152",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.104",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.45",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1.9",
                            "lessThanOrEqual": "7.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2",
                            "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": "4.6",
                                    "versionEndExcluding": "5.10.265"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.6",
                                    "versionEndExcluding": "5.15.216"
                                },
                                {
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                                    "versionEndExcluding": "6.1.183"
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                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                                    "versionEndExcluding": "6.6.152"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.6",
                                    "versionEndExcluding": "6.12.104"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                                    "versionStartIncluding": "4.6",
                                    "versionEndExcluding": "7.1.9"
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                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.6",
                                    "versionEndExcluding": "7.2"
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                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/6a733a38b983d8c2e222f13968209010cf44de87"
                },
                {
                    "url": "https://git.kernel.org/stable/c/19d89b13a43640b2da2f277ee462d919d988cb6f"
                },
                {
                    "url": "https://git.kernel.org/stable/c/b3df61bb745eb5201eac22679a2839d4ccbf3442"
                },
                {
                    "url": "https://git.kernel.org/stable/c/1ae134c012e10384cdac420b5cc6e0615cde0b55"
                },
                {
                    "url": "https://git.kernel.org/stable/c/5161e67c561c4f28a5d9335a6e859b02511de92b"
                },
                {
                    "url": "https://git.kernel.org/stable/c/64d322c288577793eedd352b96ef75234ed380fe"
                },
                {
                    "url": "https://git.kernel.org/stable/c/588d4a6795d99d080f74ef0b5f391ea8c453ae5d"
                },
                {
                    "url": "https://git.kernel.org/stable/c/d0f86fb36eb260abd10007b62c9dcc1028e03e61"
                }
            ],
            "title": "udp: fix potential use-after-free in tunnel segmentation",
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}