{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-31748",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-03-09T15:48:24.138Z",
        "datePublished": "2026-05-01T14:14:41.545Z",
        "dateUpdated": "2026-05-11T22:15:00.272Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T22:15:00.272Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncomedi: me_daq: Fix potential overrun of firmware buffer\n\n`me2600_xilinx_download()` loads the firmware that was requested by\n`request_firmware()`.  It is possible for it to overrun the source\nbuffer because it blindly trusts the file format.  It reads a data\nstream length from the first 4 bytes into variable `file_length` and\nreads the data stream contents of length `file_length` from offset 16\nonwards.  Although it checks that the supplied firmware is at least 16\nbytes long, it does not check that it is long enough to contain the data\nstream.\n\nAdd a test to ensure that the supplied firmware is long enough to\ncontain the header and the data stream.  On failure, log an error and\nreturn `-EINVAL`."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/comedi/drivers/me_daq.c"
                    ],
                    "versions": [
                        {
                            "version": "85acac61096f946a78cf0c4b65f7cebe580693b6",
                            "lessThan": "2fc25a4c2e055cd42ea39a1b42c89bfef70e0319",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "85acac61096f946a78cf0c4b65f7cebe580693b6",
                            "lessThan": "9f39fa07259eb342908e4aa0271dee038a8ce4f8",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "85acac61096f946a78cf0c4b65f7cebe580693b6",
                            "lessThan": "f3f8ec00cfb8d8e826e30b1138a56355b88e9ba8",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "85acac61096f946a78cf0c4b65f7cebe580693b6",
                            "lessThan": "c16ac4e173a05011437a2d868f70cc415339065a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "85acac61096f946a78cf0c4b65f7cebe580693b6",
                            "lessThan": "1bf8761eb59e94bf7b8c17b2a1ee48f14378b172",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "85acac61096f946a78cf0c4b65f7cebe580693b6",
                            "lessThan": "a47ae40339c1048f519df33ff8840731720f57cb",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "85acac61096f946a78cf0c4b65f7cebe580693b6",
                            "lessThan": "c8c607a77aab783f2e38cc2e0f24aa6c8f6d200b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "85acac61096f946a78cf0c4b65f7cebe580693b6",
                            "lessThan": "cc797d4821c754c701d9714b58bea947e31dbbe0",
                            "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/comedi/drivers/me_daq.c"
                    ],
                    "versions": [
                        {
                            "version": "2.6.29",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "2.6.29",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.253",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.203",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.168",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.134",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.81",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.22",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.19.12",
                            "lessThanOrEqual": "6.19.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.0",
                            "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": "2.6.29",
                                    "versionEndExcluding": "5.10.253"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.29",
                                    "versionEndExcluding": "5.15.203"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.29",
                                    "versionEndExcluding": "6.1.168"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.29",
                                    "versionEndExcluding": "6.6.134"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.29",
                                    "versionEndExcluding": "6.12.81"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.29",
                                    "versionEndExcluding": "6.18.22"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.29",
                                    "versionEndExcluding": "6.19.12"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.29",
                                    "versionEndExcluding": "7.0"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/2fc25a4c2e055cd42ea39a1b42c89bfef70e0319"
                },
                {
                    "url": "https://git.kernel.org/stable/c/9f39fa07259eb342908e4aa0271dee038a8ce4f8"
                },
                {
                    "url": "https://git.kernel.org/stable/c/f3f8ec00cfb8d8e826e30b1138a56355b88e9ba8"
                },
                {
                    "url": "https://git.kernel.org/stable/c/c16ac4e173a05011437a2d868f70cc415339065a"
                },
                {
                    "url": "https://git.kernel.org/stable/c/1bf8761eb59e94bf7b8c17b2a1ee48f14378b172"
                },
                {
                    "url": "https://git.kernel.org/stable/c/a47ae40339c1048f519df33ff8840731720f57cb"
                },
                {
                    "url": "https://git.kernel.org/stable/c/c8c607a77aab783f2e38cc2e0f24aa6c8f6d200b"
                },
                {
                    "url": "https://git.kernel.org/stable/c/cc797d4821c754c701d9714b58bea947e31dbbe0"
                }
            ],
            "title": "comedi: me_daq: Fix potential overrun of firmware buffer",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}