{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2022-50864",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-12-30T12:06:07.135Z",
        "datePublished": "2025-12-30T12:15:36.489Z",
        "dateUpdated": "2026-05-11T19:26:35.896Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T19:26:35.896Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnilfs2: fix shift-out-of-bounds due to too large exponent of block size\n\nIf field s_log_block_size of superblock data is corrupted and too large,\ninit_nilfs() and load_nilfs() still can trigger a shift-out-of-bounds\nwarning followed by a kernel panic (if panic_on_warn is set):\n\n shift exponent 38973 is too large for 32-bit type 'int'\n Call Trace:\n  <TASK>\n  dump_stack_lvl+0xcd/0x134\n  ubsan_epilogue+0xb/0x50\n  __ubsan_handle_shift_out_of_bounds.cold.12+0x17b/0x1f5\n  init_nilfs.cold.11+0x18/0x1d [nilfs2]\n  nilfs_mount+0x9b5/0x12b0 [nilfs2]\n  ...\n\nThis fixes the issue by adding and using a new helper function for getting\nblock size with sanity check."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/nilfs2/the_nilfs.c"
                    ],
                    "versions": [
                        {
                            "version": "8a9d2191e9f43bbcd256a9a6871bd73434c83f2f",
                            "lessThan": "ec93b5430ec0f60877a5388bb023d60624f9ab9f",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8a9d2191e9f43bbcd256a9a6871bd73434c83f2f",
                            "lessThan": "8b6ef451b5701b37d9a5905534595776a662edfc",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8a9d2191e9f43bbcd256a9a6871bd73434c83f2f",
                            "lessThan": "ddb6615a168f97b91175e00eda4c644741cf531c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
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                            "lessThan": "a16731fa1b96226c75bbf18e73513b14fc318360",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8a9d2191e9f43bbcd256a9a6871bd73434c83f2f",
                            "lessThan": "ebeccaaef67a4895d2496ab8d9c2fb8d89201211",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/nilfs2/the_nilfs.c"
                    ],
                    "versions": [
                        {
                            "version": "2.6.30",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "2.6.30",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.163",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.86",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.0.16",
                            "lessThanOrEqual": "6.0.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.2",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.2",
                            "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": "2.6.30",
                                    "versionEndExcluding": "5.10.163"
                                },
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                                    "versionStartIncluding": "2.6.30",
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            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/ec93b5430ec0f60877a5388bb023d60624f9ab9f"
                },
                {
                    "url": "https://git.kernel.org/stable/c/8b6ef451b5701b37d9a5905534595776a662edfc"
                },
                {
                    "url": "https://git.kernel.org/stable/c/ddb6615a168f97b91175e00eda4c644741cf531c"
                },
                {
                    "url": "https://git.kernel.org/stable/c/a16731fa1b96226c75bbf18e73513b14fc318360"
                },
                {
                    "url": "https://git.kernel.org/stable/c/ebeccaaef67a4895d2496ab8d9c2fb8d89201211"
                }
            ],
            "title": "nilfs2: fix shift-out-of-bounds due to too large exponent of block size",
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}