{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-98600",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-25T10:25:14.359Z",
        "datePublished": "2026-10-18T15:19:12.864Z",
        "dateUpdated": "2026-10-19T09:22:26.711Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-19T09:22:26.711Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: RFCOMM: Reject short EA=0 frames in rfcomm_recv_frame()\n\nWhile rfcomm_recv_frame() verifies that skb->len is at least\nsizeof(*hdr) + 1 (4 bytes: 3-byte header + 1-byte FCS), an RFCOMM frame\nwith an extended 2-byte length field (!__test_ea(hdr->len)) has a 4-byte\nheader plus a 1-byte FCS (5 bytes minimum, sizeof(*hdr) + 2).\n\nWhen a 4-byte RFCOMM frame with EA == 0 arrives:\n1. The initial skb->len < sizeof(*hdr) + 1 check passes (4 < 4 is false).\n2. Trimming the FCS byte decrements skb->len to 3.\n3. If __check_fcs() succeeds, skb_pull(skb, 4) fails (4 > 3) and returns\n   NULL without advancing skb->data.\n4. Because the return value of skb_pull() is ignored, the un-pulled\n   3-byte struct rfcomm_hdr remains at skb->data and is either queued as\n   application payload via rfcomm_recv_data() or parsed as a multiplexer\n   control command via rfcomm_recv_mcc() on DLCI 0.\n\nFix this by extending the length check in rfcomm_recv_frame() to also\nrequire skb->len >= sizeof(*hdr) + 2 when !__test_ea(hdr->len)."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/bluetooth/rfcomm/core.c"
                    ],
                    "versions": [
                        {
                            "version": "fb40eda15122f6b780228639c1ead6820340ff54",
                            "lessThan": "76876fd26569302d26d91cbe8b75fa8e66cf8969",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "3829af5fab5a22405bf1e7d69068c2ec0fce46ca",
                            "lessThan": "97711b964877242933484989224a3c4c5d88a5ee",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b161eacd7fa4a2d765724b5504ac6cc388e48f80",
                            "lessThan": "7a1781a2f3a9667b3065d402d1f11986a2363e08",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "30d1d9f3495463f7c026e4c553127f79b486fcd6",
                            "lessThan": "c25587fa26761e623198b4f47151fe79d09ccde6",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "67dc3b40fae71b6b11c71e7ff69bac0758818c05",
                            "lessThan": "71ccacde407b7d8f0ef48974a0d2524602fd5c44",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "bbc310caa2b6bf5fe42896ba27da0fbc12e4ac51",
                            "lessThan": "be00deee60044ffa820f9436415caeb665b2cda0",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b230e5bf501c5edaf2eb0991cb862ac142031d4b",
                            "lessThan": "9240fc1f2cde5331c61608da21b00394602ca762",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b230e5bf501c5edaf2eb0991cb862ac142031d4b",
                            "lessThan": "6d91041bb38b97e2feb625123cc0529d7b83a0e1",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6.12.111",
                            "lessThan": "6.12.112",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.53",
                            "lessThan": "6.18.55",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/bluetooth/rfcomm/core.c"
                    ],
                    "versions": [
                        {
                            "version": "7.2",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "7.2",
                            "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": "6.12.111",
                                    "versionEndExcluding": "6.12.112"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.18.53",
                                    "versionEndExcluding": "6.18.55"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "7.2",
                                    "versionEndExcluding": "7.2.9"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "7.2",
                                    "versionEndExcluding": "7.3"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/76876fd26569302d26d91cbe8b75fa8e66cf8969"
                },
                {
                    "url": "https://git.kernel.org/stable/c/97711b964877242933484989224a3c4c5d88a5ee"
                },
                {
                    "url": "https://git.kernel.org/stable/c/7a1781a2f3a9667b3065d402d1f11986a2363e08"
                },
                {
                    "url": "https://git.kernel.org/stable/c/c25587fa26761e623198b4f47151fe79d09ccde6"
                },
                {
                    "url": "https://git.kernel.org/stable/c/71ccacde407b7d8f0ef48974a0d2524602fd5c44"
                },
                {
                    "url": "https://git.kernel.org/stable/c/be00deee60044ffa820f9436415caeb665b2cda0"
                },
                {
                    "url": "https://git.kernel.org/stable/c/9240fc1f2cde5331c61608da21b00394602ca762"
                },
                {
                    "url": "https://git.kernel.org/stable/c/6d91041bb38b97e2feb625123cc0529d7b83a0e1"
                }
            ],
            "title": "Bluetooth: RFCOMM: Reject short EA=0 frames in rfcomm_recv_frame()",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}