{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-23298",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-01-13T15:37:45.993Z",
        "datePublished": "2026-03-25T10:26:54.830Z",
        "dateUpdated": "2026-05-11T22:04:10.668Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T22:04:10.668Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: ucan: Fix infinite loop from zero-length messages\n\nIf a broken ucan device gets a message with the message length field set\nto 0, then the driver will loop for forever in\nucan_read_bulk_callback(), hanging the system.  If the length is 0, just\nskip the message and go on to the next one.\n\nThis has been fixed in the kvaser_usb driver in the past in commit\n0c73772cd2b8 (\"can: kvaser_usb: leaf: Fix potential infinite loop in\ncommand parsers\"), so there must be some broken devices out there like\nthis somewhere."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/net/can/usb/ucan.c"
                    ],
                    "versions": [
                        {
                            "version": "9f2d3eae88d26c29d96e42983b755940d9169cd9",
                            "lessThan": "ca07d3c6eef14d34e6fdeefe55058db045be29dc",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "9f2d3eae88d26c29d96e42983b755940d9169cd9",
                            "lessThan": "e7bb6e0606b5f233531aaaad9542d69fbb792115",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "9f2d3eae88d26c29d96e42983b755940d9169cd9",
                            "lessThan": "ab6f075492d37368b4c7b0df7f7fdc2b666887fc",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "9f2d3eae88d26c29d96e42983b755940d9169cd9",
                            "lessThan": "13b646eec3ba1131180803f5aaf1fee23540ad8f",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "9f2d3eae88d26c29d96e42983b755940d9169cd9",
                            "lessThan": "bd85f21a6219aeae4389d700c54f1799f4b814e0",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "9f2d3eae88d26c29d96e42983b755940d9169cd9",
                            "lessThan": "aa9e0a7fe5efc2f74327fd37d828e9a51d9ff588",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "9f2d3eae88d26c29d96e42983b755940d9169cd9",
                            "lessThan": "c7bc62be6c1a60bb21301692009590b1ffda91d9",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "9f2d3eae88d26c29d96e42983b755940d9169cd9",
                            "lessThan": "1e446fd0582ad8be9f6dafb115fc2e7245f9bea7",
                            "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/net/can/usb/ucan.c"
                    ],
                    "versions": [
                        {
                            "version": "4.19",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.19",
                            "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": "6.1.167",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.130",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.77",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.17",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.19.7",
                            "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": [
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                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.19",
                                    "versionEndExcluding": "5.10.253"
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            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/ca07d3c6eef14d34e6fdeefe55058db045be29dc"
                },
                {
                    "url": "https://git.kernel.org/stable/c/e7bb6e0606b5f233531aaaad9542d69fbb792115"
                },
                {
                    "url": "https://git.kernel.org/stable/c/ab6f075492d37368b4c7b0df7f7fdc2b666887fc"
                },
                {
                    "url": "https://git.kernel.org/stable/c/13b646eec3ba1131180803f5aaf1fee23540ad8f"
                },
                {
                    "url": "https://git.kernel.org/stable/c/bd85f21a6219aeae4389d700c54f1799f4b814e0"
                },
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                },
                {
                    "url": "https://git.kernel.org/stable/c/c7bc62be6c1a60bb21301692009590b1ffda91d9"
                },
                {
                    "url": "https://git.kernel.org/stable/c/1e446fd0582ad8be9f6dafb115fc2e7245f9bea7"
                }
            ],
            "title": "can: ucan: Fix infinite loop from zero-length messages",
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}