{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-31750",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-03-09T15:48:24.139Z",
        "datePublished": "2026-05-01T14:14:42.887Z",
        "dateUpdated": "2026-05-11T22:15:04.978Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T22:15:04.978Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncomedi: runflags cannot determine whether to reclaim chanlist\n\nsyzbot reported a memory leak [1], because commit 4e1da516debb (\"comedi:\nAdd reference counting for Comedi command handling\") did not consider\nthe exceptional exit case in do_cmd_ioctl() where runflags is not set.\nThis caused chanlist not to be properly freed by do_become_nonbusy(),\nas it only frees chanlist when runflags is correctly set.\n\nAdded a check in do_become_nonbusy() for the case where runflags is not\nset, to properly free the chanlist memory.\n\n[1]\nBUG: memory leak\n  backtrace (crc 844a0efa):\n    __comedi_get_user_chanlist drivers/comedi/comedi_fops.c:1815 [inline]\n    do_cmd_ioctl.part.0+0x112/0x350 drivers/comedi/comedi_fops.c:1890\n    do_cmd_ioctl drivers/comedi/comedi_fops.c:1858 [inline]"
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/comedi/comedi_fops.c"
                    ],
                    "versions": [
                        {
                            "version": "4e1da516debbe6a573ffa0392e2809d180d0575c",
                            "lessThan": "830c848aba9f047eb6b34288975ebeb8e8621451",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "4e1da516debbe6a573ffa0392e2809d180d0575c",
                            "lessThan": "29f644f14b89e6c4965e3c89251929e451190a66",
                            "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/comedi_fops.c"
                    ],
                    "versions": [
                        {
                            "version": "6.19",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.19",
                            "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": "6.19",
                                    "versionEndExcluding": "6.19.12"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.19",
                                    "versionEndExcluding": "7.0"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/830c848aba9f047eb6b34288975ebeb8e8621451"
                },
                {
                    "url": "https://git.kernel.org/stable/c/29f644f14b89e6c4965e3c89251929e451190a66"
                }
            ],
            "title": "comedi: runflags cannot determine whether to reclaim chanlist",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}