{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-68479",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-07-30T09:28:09.397Z",
        "datePublished": "2026-08-15T05:51:34.106Z",
        "dateUpdated": "2026-08-15T05:51:34.106Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-15T05:51:34.106Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: btrtl: validate firmware patch bounds\n\nrtlbt_parse_firmware() copies patch_length - 4 bytes before appending the\nfirmware version. A malformed firmware patch shorter than the version field\ncan make this subtraction underflow and turn the copy into an oversized\nread and write during Bluetooth setup.\n\nThe existing patch_offset + patch_length check can also wrap on 32-bit\narchitectures. Validate the patch length and range without arithmetic\noverflow before allocating or copying the patch."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/bluetooth/btrtl.c"
                    ],
                    "versions": [
                        {
                            "version": "db33c77dddc2ed2cff3061d0b096a9f5ab0c3647",
                            "lessThan": "39e01b4addfbbe177567d6ed1dfb81f9cccb19e6",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "db33c77dddc2ed2cff3061d0b096a9f5ab0c3647",
                            "lessThan": "bda3c598ade6ea03884074b91e31608326684921",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "db33c77dddc2ed2cff3061d0b096a9f5ab0c3647",
                            "lessThan": "a4cb830e0b55ac76c849fd7840afb251f4c028fa",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "db33c77dddc2ed2cff3061d0b096a9f5ab0c3647",
                            "lessThan": "68c5a2a19987c035eb129e627e579adafb04f637",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "db33c77dddc2ed2cff3061d0b096a9f5ab0c3647",
                            "lessThan": "83534891c058ed71e251135072640911670869aa",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "db33c77dddc2ed2cff3061d0b096a9f5ab0c3647",
                            "lessThan": "6744ab60dfac55d1df5733960aad5be300984301",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "db33c77dddc2ed2cff3061d0b096a9f5ab0c3647",
                            "lessThan": "f1ca750c0510bdbb504bf084d2f196ef2af92ea6",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "db33c77dddc2ed2cff3061d0b096a9f5ab0c3647",
                            "lessThan": "609c5b04a28dc1b0f3af6a7bc93055135b2d2059",
                            "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/bluetooth/btrtl.c"
                    ],
                    "versions": [
                        {
                            "version": "4.2",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.2",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.261",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.212",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.178",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.145",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.97",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.40",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1.5",
                            "lessThanOrEqual": "7.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2-rc4",
                            "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": "4.2",
                                    "versionEndExcluding": "5.10.261"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.2",
                                    "versionEndExcluding": "5.15.212"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.2",
                                    "versionEndExcluding": "6.1.178"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.2",
                                    "versionEndExcluding": "6.6.145"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.2",
                                    "versionEndExcluding": "6.12.97"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.2",
                                    "versionEndExcluding": "6.18.40"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.2",
                                    "versionEndExcluding": "7.1.5"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.2",
                                    "versionEndExcluding": "7.2-rc4"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/39e01b4addfbbe177567d6ed1dfb81f9cccb19e6"
                },
                {
                    "url": "https://git.kernel.org/stable/c/bda3c598ade6ea03884074b91e31608326684921"
                },
                {
                    "url": "https://git.kernel.org/stable/c/a4cb830e0b55ac76c849fd7840afb251f4c028fa"
                },
                {
                    "url": "https://git.kernel.org/stable/c/68c5a2a19987c035eb129e627e579adafb04f637"
                },
                {
                    "url": "https://git.kernel.org/stable/c/83534891c058ed71e251135072640911670869aa"
                },
                {
                    "url": "https://git.kernel.org/stable/c/6744ab60dfac55d1df5733960aad5be300984301"
                },
                {
                    "url": "https://git.kernel.org/stable/c/f1ca750c0510bdbb504bf084d2f196ef2af92ea6"
                },
                {
                    "url": "https://git.kernel.org/stable/c/609c5b04a28dc1b0f3af6a7bc93055135b2d2059"
                }
            ],
            "title": "Bluetooth: btrtl: validate firmware patch bounds",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}