{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-98582",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-25T10:25:14.358Z",
        "datePublished": "2026-10-18T15:18:55.545Z",
        "dateUpdated": "2026-10-19T09:22:08.022Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-19T09:22:08.022Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfc: st21nfca: validate received frame size\n\nst21nfca_hci_i2c_repack() trims a received frame at its EOF marker\nbefore removing byte stuffing.  It then assumes the truncated frame\ncontains the LLC header and two CRC bytes, and it unconditionally reads\nthe byte after an escape marker.\n\nA malformed frame can place EOF immediately after the start marker or can\nend its data portion with an escape marker.  The former leaves too few\nbytes for check_crc(), while the latter makes the unstuffing loop read past\nthe current skb length.\n\nRequire the minimum framing bytes both before and after unstuffing.  Use\nseparate input and output cursors while removing byte stuffing, and reject\nan escape marker without its encoded byte.  This keeps malformed frames\nwithin the received frame boundary before CRC processing."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/nfc/st21nfca/i2c.c"
                    ],
                    "versions": [
                        {
                            "version": "3096e25a3e40b73afd59e46f3bf8d84f919992a1",
                            "lessThan": "8934d2889ae16a7c77520e002398d0689c1ecea5",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "3096e25a3e40b73afd59e46f3bf8d84f919992a1",
                            "lessThan": "d0596ee6c4b928a5c288790522a7495ee867da72",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "3096e25a3e40b73afd59e46f3bf8d84f919992a1",
                            "lessThan": "f526c218a149a30f110ce434ff17e033042404b8",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "3096e25a3e40b73afd59e46f3bf8d84f919992a1",
                            "lessThan": "d4008c3499dba7829bfe002edd99a8bff8ae3a7c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "3096e25a3e40b73afd59e46f3bf8d84f919992a1",
                            "lessThan": "91be5161f37b0a2795ad6806d69be5fa74522e5c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "3096e25a3e40b73afd59e46f3bf8d84f919992a1",
                            "lessThan": "57919d0662d8856211b794140172e51ca389f23d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "3096e25a3e40b73afd59e46f3bf8d84f919992a1",
                            "lessThan": "7b996cc06dda54c02a5aa607bda01109f0ac51e6",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "3096e25a3e40b73afd59e46f3bf8d84f919992a1",
                            "lessThan": "a653c01ce447f10c36b901646888c0330363af4f",
                            "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/st21nfca/i2c.c"
                    ],
                    "versions": [
                        {
                            "version": "3.16",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "3.16",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.271",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.222",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.189",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.158",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.112",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.55",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.9",
                            "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": "3.16",
                                    "versionEndExcluding": "5.10.271"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.16",
                                    "versionEndExcluding": "5.15.222"
                                },
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.16",
                                    "versionEndExcluding": "6.1.189"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.16",
                                    "versionEndExcluding": "6.6.158"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.16",
                                    "versionEndExcluding": "6.12.112"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.16",
                                    "versionEndExcluding": "7.2.9"
                                },
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.16",
                                    "versionEndExcluding": "7.3"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/8934d2889ae16a7c77520e002398d0689c1ecea5"
                },
                {
                    "url": "https://git.kernel.org/stable/c/d0596ee6c4b928a5c288790522a7495ee867da72"
                },
                {
                    "url": "https://git.kernel.org/stable/c/f526c218a149a30f110ce434ff17e033042404b8"
                },
                {
                    "url": "https://git.kernel.org/stable/c/d4008c3499dba7829bfe002edd99a8bff8ae3a7c"
                },
                {
                    "url": "https://git.kernel.org/stable/c/91be5161f37b0a2795ad6806d69be5fa74522e5c"
                },
                {
                    "url": "https://git.kernel.org/stable/c/57919d0662d8856211b794140172e51ca389f23d"
                },
                {
                    "url": "https://git.kernel.org/stable/c/7b996cc06dda54c02a5aa607bda01109f0ac51e6"
                },
                {
                    "url": "https://git.kernel.org/stable/c/a653c01ce447f10c36b901646888c0330363af4f"
                }
            ],
            "title": "nfc: st21nfca: validate received frame size",
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}