{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-80802",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-08-26T14:34:25.794Z",
        "datePublished": "2026-09-04T15:13:16.241Z",
        "dateUpdated": "2026-10-19T08:43:55.498Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-19T08:43:55.498Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfc: fdp: bound the device-reported read length and fix an skb leak\n\nfdp_nci_i2c_read() takes the next packet length from two device-supplied\nbytes and never validates it. The value is a u16 used as the\ni2c_master_recv() count into a 261-byte on-stack buffer: a malicious,\ncounterfeit or malfunctioning controller (or an i2c bus interposer) can\ndrive it far past the buffer for a stack out-of-bounds write that\nclobbers the canary and return address, or below the minimum frame size\n(directly, or by truncating the computed sum) so the header/LRC strip\nand the next length read run past a short receive. Reject a length\noutside [FDP_NCI_I2C_MIN_PAYLOAD, FDP_NCI_I2C_MAX_PAYLOAD], as a\ncorrupted packet already is, and force resynchronization.\n\nThe same loop allocates one data skb per iteration and assumes a length\npacket followed by a data packet; a device that sends two data packets\nin one call leaks the first skb when the second allocation overwrites\nit. Free a previously allocated skb before allocating the next."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/nfc/fdp/i2c.c"
                    ],
                    "versions": [
                        {
                            "version": "a06347c04c13e380afce0c9816df51f00b83faf1",
                            "lessThan": "d9498ab9a78cb63d78dbe4f221d8cc6c91f285ee",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a06347c04c13e380afce0c9816df51f00b83faf1",
                            "lessThan": "1fc32327b927a6e2cde086f82575c29880844228",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a06347c04c13e380afce0c9816df51f00b83faf1",
                            "lessThan": "8d2c243b79854628ff076c38748c020042f02f57",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a06347c04c13e380afce0c9816df51f00b83faf1",
                            "lessThan": "fc3c2bd5b1ec6c7cbc8a50e32d9bcec114f25463",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a06347c04c13e380afce0c9816df51f00b83faf1",
                            "lessThan": "0d723090645b82c1cb27cfd7ebf81f0e7c96bcae",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a06347c04c13e380afce0c9816df51f00b83faf1",
                            "lessThan": "db7e464b350969c6ea8340de00d9796e5fd5123b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a06347c04c13e380afce0c9816df51f00b83faf1",
                            "lessThan": "e5eec121f2c3bc4c7022613bedd9121a8aa4c949",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a06347c04c13e380afce0c9816df51f00b83faf1",
                            "lessThan": "1aa3fc769b0c45bd19f8dab1697084c2b3f6d706",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a06347c04c13e380afce0c9816df51f00b83faf1",
                            "lessThan": "7ad21dcfeb5181af0c3ee2608808c0c0a5283aa1",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/nfc/fdp/i2c.c"
                    ],
                    "versions": [
                        {
                            "version": "4.4",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.4",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.267",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.218",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.185",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.154",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.106",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.47",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1.11",
                            "lessThanOrEqual": "7.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.1",
                            "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": "4.4",
                                    "versionEndExcluding": "5.10.267"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.4",
                                    "versionEndExcluding": "5.15.218"
                                },
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.4",
                                    "versionEndExcluding": "6.1.185"
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            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/d9498ab9a78cb63d78dbe4f221d8cc6c91f285ee"
                },
                {
                    "url": "https://git.kernel.org/stable/c/1fc32327b927a6e2cde086f82575c29880844228"
                },
                {
                    "url": "https://git.kernel.org/stable/c/8d2c243b79854628ff076c38748c020042f02f57"
                },
                {
                    "url": "https://git.kernel.org/stable/c/fc3c2bd5b1ec6c7cbc8a50e32d9bcec114f25463"
                },
                {
                    "url": "https://git.kernel.org/stable/c/0d723090645b82c1cb27cfd7ebf81f0e7c96bcae"
                },
                {
                    "url": "https://git.kernel.org/stable/c/db7e464b350969c6ea8340de00d9796e5fd5123b"
                },
                {
                    "url": "https://git.kernel.org/stable/c/e5eec121f2c3bc4c7022613bedd9121a8aa4c949"
                },
                {
                    "url": "https://git.kernel.org/stable/c/1aa3fc769b0c45bd19f8dab1697084c2b3f6d706"
                },
                {
                    "url": "https://git.kernel.org/stable/c/7ad21dcfeb5181af0c3ee2608808c0c0a5283aa1"
                }
            ],
            "title": "nfc: fdp: bound the device-reported read length and fix an skb leak",
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}