{
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    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2024-36966",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2024-05-30T15:25:07.081Z",
        "datePublished": "2024-06-08T12:52:59.148Z",
        "dateUpdated": "2026-05-11T20:18:02.971Z"
    },
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                "dateUpdated": "2026-05-11T20:18:02.971Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nerofs: reliably distinguish block based and fscache mode\n\nWhen erofs_kill_sb() is called in block dev based mode, s_bdev may not\nhave been initialised yet, and if CONFIG_EROFS_FS_ONDEMAND is enabled,\nit will be mistaken for fscache mode, and then attempt to free an anon_dev\nthat has never been allocated, triggering the following warning:\n\n============================================\nida_free called for id=0 which is not allocated.\nWARNING: CPU: 14 PID: 926 at lib/idr.c:525 ida_free+0x134/0x140\nModules linked in:\nCPU: 14 PID: 926 Comm: mount Not tainted 6.9.0-rc3-dirty #630\nRIP: 0010:ida_free+0x134/0x140\nCall Trace:\n <TASK>\n erofs_kill_sb+0x81/0x90\n deactivate_locked_super+0x35/0x80\n get_tree_bdev+0x136/0x1e0\n vfs_get_tree+0x2c/0xf0\n do_new_mount+0x190/0x2f0\n [...]\n============================================\n\nNow when erofs_kill_sb() is called, erofs_sb_info must have been\ninitialised, so use sbi->fsid to distinguish between the two modes."
                }
            ],
            "affected": [
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                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/erofs/super.c"
                    ],
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                            "status": "affected",
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                            "lessThan": "dcdd49701e429c55b3644fd70fc58d85745f8cfe",
                            "status": "affected",
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                    ],
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                            "status": "affected"
                        },
                        {
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                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.32",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.8.11",
                            "lessThanOrEqual": "6.8.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.9",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
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                    "url": "https://git.kernel.org/stable/c/7af2ae1b1531feab5d38ec9c8f472dc6cceb4606"
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            "title": "erofs: reliably distinguish block based and fscache mode",
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