{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2022-49195",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-02-26T01:49:39.288Z",
        "datePublished": "2025-02-26T01:55:40.082Z",
        "dateUpdated": "2026-05-11T18:54:57.845Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T18:54:57.845Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: dsa: fix panic on shutdown if multi-chip tree failed to probe\n\nDSA probing is atypical because a tree of devices must probe all at\nonce, so out of N switches which call dsa_tree_setup_routing_table()\nduring probe, for (N - 1) of them, \"complete\" will return false and they\nwill exit probing early. The Nth switch will set up the whole tree on\ntheir behalf.\n\nThe implication is that for (N - 1) switches, the driver binds to the\ndevice successfully, without doing anything. When the driver is bound,\nthe ->shutdown() method may run. But if the Nth switch has failed to\ninitialize the tree, there is nothing to do for the (N - 1) driver\ninstances, since the slave devices have not been created, etc. Moreover,\ndsa_switch_shutdown() expects that the calling @ds has been in fact\ninitialized, so it jumps at dereferencing the various data structures,\nwhich is incorrect.\n\nAvoid the ensuing NULL pointer dereferences by simply checking whether\nthe Nth switch has previously set \"ds->setup = true\" for the switch\nwhich is currently shutting down. The entire setup is serialized under\ndsa2_mutex which we already hold."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/dsa/dsa2.c"
                    ],
                    "versions": [
                        {
                            "version": "0650bf52b31ff35dc6430fc2e37969c36baba724",
                            "lessThan": "95df5cd5a446df6738d2d45872e08594819080e4",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "0650bf52b31ff35dc6430fc2e37969c36baba724",
                            "lessThan": "b6e668ff43ebd87ccc8a19e5481345c428672295",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "0650bf52b31ff35dc6430fc2e37969c36baba724",
                            "lessThan": "b864d5350c18bea9369d0bdd9e7eb6f6172cc283",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "0650bf52b31ff35dc6430fc2e37969c36baba724",
                            "lessThan": "8fd36358ce82382519b50b05f437493e1e00c4a9",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/dsa/dsa2.c"
                    ],
                    "versions": [
                        {
                            "version": "5.15",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.15",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.33",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.16.19",
                            "lessThanOrEqual": "5.16.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.17.2",
                            "lessThanOrEqual": "5.17.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.18",
                            "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": "5.15",
                                    "versionEndExcluding": "5.15.33"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.15",
                                    "versionEndExcluding": "5.16.19"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.15",
                                    "versionEndExcluding": "5.17.2"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.15",
                                    "versionEndExcluding": "5.18"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/95df5cd5a446df6738d2d45872e08594819080e4"
                },
                {
                    "url": "https://git.kernel.org/stable/c/b6e668ff43ebd87ccc8a19e5481345c428672295"
                },
                {
                    "url": "https://git.kernel.org/stable/c/b864d5350c18bea9369d0bdd9e7eb6f6172cc283"
                },
                {
                    "url": "https://git.kernel.org/stable/c/8fd36358ce82382519b50b05f437493e1e00c4a9"
                }
            ],
            "title": "net: dsa: fix panic on shutdown if multi-chip tree failed to probe",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}