{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2023-53597",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-10-04T15:40:38.479Z",
        "datePublished": "2025-10-04T15:44:09.616Z",
        "dateUpdated": "2026-05-23T15:29:56.902Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-23T15:29:56.902Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncifs: fix mid leak during reconnection after timeout threshold\n\nWhen the number of responses with status of STATUS_IO_TIMEOUT\nexceeds a specified threshold (NUM_STATUS_IO_TIMEOUT), we reconnect\nthe connection. But we do not return the mid, or the credits\nreturned for the mid, or reduce the number of in-flight requests.\n\nThis bug could result in the server->in_flight count to go bad,\nand also cause a leak in the mids.\n\nThis change moves the check to a few lines below where the\nresponse is decrypted, even of the response is read from the\ntransform header. This way, the code for returning the mids\ncan be reused.\n\nAlso, the cifs_reconnect was reconnecting just the transport\nconnection before. In case of multi-channel, this may not be\nwhat we want to do after several timeouts. Changed that to\nreconnect the session and the tree too.\n\nAlso renamed NUM_STATUS_IO_TIMEOUT to a more appropriate name\nMAX_STATUS_IO_TIMEOUT."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/smb/client/connect.c"
                    ],
                    "versions": [
                        {
                            "version": "8e670f77c4a55013db6d23b962f9bf6673a5e7b6",
                            "lessThan": "df31d05f0678cdd0796ea19983a2b93edca18bb0",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8e670f77c4a55013db6d23b962f9bf6673a5e7b6",
                            "lessThan": "c55901d381a22300c9922170e59704059f50977b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8e670f77c4a55013db6d23b962f9bf6673a5e7b6",
                            "lessThan": "57d25e9905c71133e201f6d06b56a3403d4ad433",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8e670f77c4a55013db6d23b962f9bf6673a5e7b6",
                            "lessThan": "69cba9d3c1284e0838ae408830a02c4a063104bc",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "fa6d7a5853f93efb088aba36af12cb1944156411",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "5.9.5",
                            "lessThan": "5.10",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/smb/client/connect.c"
                    ],
                    "versions": [
                        {
                            "version": "5.10",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.10",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.150",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.42",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.4.7",
                            "lessThanOrEqual": "6.4.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.5",
                            "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": "5.10",
                                    "versionEndExcluding": "5.15.150"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.10",
                                    "versionEndExcluding": "6.1.42"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.10",
                                    "versionEndExcluding": "6.4.7"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.10",
                                    "versionEndExcluding": "6.5"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.9.5"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/df31d05f0678cdd0796ea19983a2b93edca18bb0"
                },
                {
                    "url": "https://git.kernel.org/stable/c/c55901d381a22300c9922170e59704059f50977b"
                },
                {
                    "url": "https://git.kernel.org/stable/c/57d25e9905c71133e201f6d06b56a3403d4ad433"
                },
                {
                    "url": "https://git.kernel.org/stable/c/69cba9d3c1284e0838ae408830a02c4a063104bc"
                }
            ],
            "title": "cifs: fix mid leak during reconnection after timeout threshold",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}