{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-90257",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-11T19:38:34.796Z",
        "datePublished": "2026-09-17T16:07:56.089Z",
        "dateUpdated": "2026-10-19T09:00:33.856Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-19T09:00:33.856Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: virtio_bt: avoid OOB read of build info string\n\nThe virtbt_setup_zephyr() sends the Zephyr vendor command 0xfc08 (Read\nBuild Information) and hands the response to bt_dev_info() and\nhci_set_fw_info() as a \"%s\" string starting at skb->data + 1, without\nchecking the length. A backend that answers with status only leaves that\npointer past the end of the received data, so the walk reads adjacent\nslab memory until it meets a NUL. Those bytes reach the kernel log and\nthe firmware-info debugfs file.\n\nTo fix this, print the string with a bounded \"%.*s\" limited to\nskb->len - 1. A short or unterminated response then prints as much as\narrived instead of failing setup.\n\nThis mirrors commit dd068ef04412 (\"Bluetooth: bpa10x: avoid OOB read of\nrevision string in bpa10x_setup()\"), which fixed the identical pattern."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/bluetooth/virtio_bt.c"
                    ],
                    "versions": [
                        {
                            "version": "afd2daa26c7abd734d78bd274fc6c59a15e61063",
                            "lessThan": "fb445b3466a8d1c7a0b0d0676fb475e3ce22d94e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "afd2daa26c7abd734d78bd274fc6c59a15e61063",
                            "lessThan": "d08c99abf06133a7829d46627e77e3315ca974d2",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "afd2daa26c7abd734d78bd274fc6c59a15e61063",
                            "lessThan": "0e388d805233a883a31271676eae6031dfc9e898",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "afd2daa26c7abd734d78bd274fc6c59a15e61063",
                            "lessThan": "54e9387eb7546eaa6f600220599d55740956ffc3",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "afd2daa26c7abd734d78bd274fc6c59a15e61063",
                            "lessThan": "be1e3df2c49c91b0a052c6563884e8d39bd768b2",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "afd2daa26c7abd734d78bd274fc6c59a15e61063",
                            "lessThan": "84ea9c99874804f5ca13f35bbc186ba93902f30f",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "afd2daa26c7abd734d78bd274fc6c59a15e61063",
                            "lessThan": "502adc06ba76dee19c292ae4a07d74d202fe734d",
                            "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/virtio_bt.c"
                    ],
                    "versions": [
                        {
                            "version": "5.13",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.13",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.221",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.188",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.157",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.110",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.52",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.6",
                            "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": "5.13",
                                    "versionEndExcluding": "5.15.221"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.13",
                                    "versionEndExcluding": "6.1.188"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.13",
                                    "versionEndExcluding": "6.6.157"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.13",
                                    "versionEndExcluding": "6.12.110"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.13",
                                    "versionEndExcluding": "6.18.52"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.13",
                                    "versionEndExcluding": "7.2.6"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.13",
                                    "versionEndExcluding": "7.3"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/fb445b3466a8d1c7a0b0d0676fb475e3ce22d94e"
                },
                {
                    "url": "https://git.kernel.org/stable/c/d08c99abf06133a7829d46627e77e3315ca974d2"
                },
                {
                    "url": "https://git.kernel.org/stable/c/0e388d805233a883a31271676eae6031dfc9e898"
                },
                {
                    "url": "https://git.kernel.org/stable/c/54e9387eb7546eaa6f600220599d55740956ffc3"
                },
                {
                    "url": "https://git.kernel.org/stable/c/be1e3df2c49c91b0a052c6563884e8d39bd768b2"
                },
                {
                    "url": "https://git.kernel.org/stable/c/84ea9c99874804f5ca13f35bbc186ba93902f30f"
                },
                {
                    "url": "https://git.kernel.org/stable/c/502adc06ba76dee19c292ae4a07d74d202fe734d"
                }
            ],
            "title": "Bluetooth: virtio_bt: avoid OOB read of build info string",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}