{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-43101",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-05-01T14:12:55.984Z",
        "datePublished": "2026-05-06T07:40:30.969Z",
        "dateUpdated": "2026-08-05T12:25:55.355Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-05T12:25:55.355Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: ioam: fix potential NULL dereferences in __ioam6_fill_trace_data()\n\nWe need to check __in6_dev_get() for possible NULL value, as\nsuggested by Yiming Qian.\n\nAlso add skb_dst_dev_rcu() instead of skb_dst_dev(),\nand two missing READ_ONCE().\n\nNote that @dev can't be NULL."
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "version": "3.1",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                        "baseScore": 7.5,
                        "baseSeverity": "HIGH"
                    },
                    "scenarios": [
                        {
                            "lang": "en",
                            "value": "AV:N - The vulnerable helper is reachable while processing IPv6 IOAM Hop-by-Hop options and IOAM LWT output for packets crossing an IOAM-enabled IPv6 node, so an attacker can trigger it with network traffic in a configured IOAM deployment.\nAC:L - Once IOAM is enabled/configured on the target path, triggering only requires a valid pre-allocated trace with ingress/egress interface ID fields and a route/device state where `__in6_dev_get()` returns NULL; there is no race or difficult timing requirement.\nPR:N - The attacker does not need credentials on the target to send the triggering IPv6 traffic; the administrative IOAM setup is a target deployment condition rather than an attacker privilege.\nUI:N - No victim user action is required after the vulnerable node is configured; packet processing alone reaches the dereference.\nS:U - The impact is within the same kernel/networking security authority and does not cross a VM, IOMMU, or similar boundary.\nC:N - The bug is a NULL pointer dereference of missing IPv6 device state, not an out-of-bounds read or information disclosure primitive.\nI:N - The fixed issue does not provide attacker-controlled writes or data modification; it only prevents dereferencing NULL `inet6_dev` pointers.\nA:H - A NULL pointer dereference in kernel packet processing can oops or panic the system, causing high availability impact."
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/ipv6/ioam6.c"
                    ],
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                            "version": "9ee11f0fff205b4b3df9750bff5e94f97c71b6a0",
                            "lessThan": "4198aab6f000b4febb18ea820fea20634dd789c7",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "9ee11f0fff205b4b3df9750bff5e94f97c71b6a0",
                            "lessThan": "3719c234fa94c37c955b1ecd3742ef280ec135e6",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "9ee11f0fff205b4b3df9750bff5e94f97c71b6a0",
                            "lessThan": "4e65a8b8daa18d63255ec58964dd192c7fdd9f8b",
                            "status": "affected",
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                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/ipv6/ioam6.c"
                    ],
                    "versions": [
                        {
                            "version": "5.15",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.15",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.24",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.19.14",
                            "lessThanOrEqual": "6.19.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.0",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
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                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                                    "versionEndExcluding": "6.18.24"
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/4198aab6f000b4febb18ea820fea20634dd789c7"
                },
                {
                    "url": "https://git.kernel.org/stable/c/3719c234fa94c37c955b1ecd3742ef280ec135e6"
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                {
                    "url": "https://git.kernel.org/stable/c/4e65a8b8daa18d63255ec58964dd192c7fdd9f8b"
                }
            ],
            "title": "ipv6: ioam: fix potential NULL dereferences in __ioam6_fill_trace_data()",
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