{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-68434",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-07-30T09:28:09.393Z",
        "datePublished": "2026-08-12T00:07:21.897Z",
        "dateUpdated": "2026-08-23T12:46:23.299Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-23T12:46:23.299Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nserial: 8250_mid: Fix NULL function pointer dereference on DNV/ICX-D/SNR platforms\n\nCommit b1b4efea05a5 (\"serial: 8250_mid: Disable DMA for selected\nplatforms\") replaced the dnv_board setup and exit callbacks with\nPTR_IF(false, ...), which evaluates to NULL. However, the three call\nsites in mid8250_probe() and mid8250_remove() unconditionally\ndereference these function pointers without NULL checks, causing a NULL\npointer dereference (kernel oops) on any Denverton (DNV), Ice Lake Xeon\nD (ICX-D/CDF), or Snowridge (SNR) platform.\n\nFix this by adding the missing NULL checks before calling the setup and\nexit callbacks."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/tty/serial/8250/8250_mid.c"
                    ],
                    "versions": [
                        {
                            "version": "763d61ded752fbb3116efc951eff4363f237b7e0",
                            "lessThan": "bdaa8871b53fe9b1730ef64dda2fcd662fd83339",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "c7d190bb07bf4e3b217c69370e94d1b4c80a40ad",
                            "lessThan": "f85a42fb90399dedcf81c146d09c07e4548b1e8c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "0b3ed3fa227ba778cabed96e7f8d84addb8bdf9c",
                            "lessThan": "4ea933a36a14bec19b71025cdd8407bafbd67ec1",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "587afb06a5d1dc5092d3d9e9ac3ccf22094d50c6",
                            "lessThan": "1096397c31f6bffa95e77bdd18fbca085be83e10",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "977855894bca4b87afa50d21e3f3e85a5a0e901f",
                            "lessThan": "600dcd548fb2b00a69f447684f52ba45d5a3540e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "1cd54e217c6e2cdb794a897b2f855e13ffcee586",
                            "lessThan": "b2a3eeb57ba24f8a0e34a69d40adcc63e5b9ca56",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "9690e8a342632344984af72bc56b7a1fba61e6cb",
                            "lessThan": "8cbad52ccfa6a7f089cfab34979bc6cc3bff25be",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b1b4efea05a56c0995e4702a86d6624b4fdff32f",
                            "lessThan": "7fb13fd7e9a59a37cd911efff83abe19e3ee029d",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/tty/serial/8250/8250_mid.c"
                    ],
                    "versions": [
                        {
                            "version": "5.10.261",
                            "lessThan": "5.10.266",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.212",
                            "lessThan": "5.15.217",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.178",
                            "lessThan": "6.1.183",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.145",
                            "lessThan": "6.6.148",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.96",
                            "lessThan": "6.12.101",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.39",
                            "lessThan": "6.18.42",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1.4",
                            "lessThan": "7.1.6",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.10.261",
                                    "versionEndExcluding": "5.10.266"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.15.212",
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.12.96",
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                                    "versionStartIncluding": "6.18.39",
                                    "versionEndExcluding": "6.18.42"
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                                    "versionStartIncluding": "7.1.4",
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            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/bdaa8871b53fe9b1730ef64dda2fcd662fd83339"
                },
                {
                    "url": "https://git.kernel.org/stable/c/f85a42fb90399dedcf81c146d09c07e4548b1e8c"
                },
                {
                    "url": "https://git.kernel.org/stable/c/4ea933a36a14bec19b71025cdd8407bafbd67ec1"
                },
                {
                    "url": "https://git.kernel.org/stable/c/1096397c31f6bffa95e77bdd18fbca085be83e10"
                },
                {
                    "url": "https://git.kernel.org/stable/c/600dcd548fb2b00a69f447684f52ba45d5a3540e"
                },
                {
                    "url": "https://git.kernel.org/stable/c/b2a3eeb57ba24f8a0e34a69d40adcc63e5b9ca56"
                },
                {
                    "url": "https://git.kernel.org/stable/c/8cbad52ccfa6a7f089cfab34979bc6cc3bff25be"
                },
                {
                    "url": "https://git.kernel.org/stable/c/7fb13fd7e9a59a37cd911efff83abe19e3ee029d"
                }
            ],
            "title": "serial: 8250_mid: Fix NULL function pointer dereference on DNV/ICX-D/SNR platforms",
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