{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2022-49220",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-02-26T01:49:39.292Z",
        "datePublished": "2025-02-26T01:55:52.821Z",
        "dateUpdated": "2026-05-11T18:55:28.411Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T18:55:28.411Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndax: make sure inodes are flushed before destroy cache\n\nA bug can be triggered by following command\n\n$ modprobe nd_pmem && modprobe -r nd_pmem\n\n[   10.060014] BUG dax_cache (Not tainted): Objects remaining in dax_cache on __kmem_cache_shutdown()\n[   10.060938] Slab 0x0000000085b729ac objects=9 used=1 fp=0x000000004f5ae469 flags=0x200000000010200(slab|head|node)\n[   10.062433] Call Trace:\n[   10.062673]  dump_stack_lvl+0x34/0x44\n[   10.062865]  slab_err+0x90/0xd0\n[   10.063619]  __kmem_cache_shutdown+0x13b/0x2f0\n[   10.063848]  kmem_cache_destroy+0x4a/0x110\n[   10.064058]  __x64_sys_delete_module+0x265/0x300\n\nThis is caused by dax_fs_exit() not flushing inodes before destroy cache.\nTo fix this issue, call rcu_barrier() before destroy cache."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/dax/super.c"
                    ],
                    "versions": [
                        {
                            "version": "7b6be8444e0f0dd675b54d059793423d3c9b4c03",
                            "lessThan": "770d42fff12d8595adda9025a0b92091f543e775",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "7b6be8444e0f0dd675b54d059793423d3c9b4c03",
                            "lessThan": "ec376f5c11c88c0215d173599db8449cd4196759",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "7b6be8444e0f0dd675b54d059793423d3c9b4c03",
                            "lessThan": "e2951eaa9398415ac054b7bd80b8163b6838ead4",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "7b6be8444e0f0dd675b54d059793423d3c9b4c03",
                            "lessThan": "f2a1e0eb70c2d954176c07d75d28742bde30e9f3",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "7b6be8444e0f0dd675b54d059793423d3c9b4c03",
                            "lessThan": "b786abe7c67c6ef71410c8e23292b3091d616ad1",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "7b6be8444e0f0dd675b54d059793423d3c9b4c03",
                            "lessThan": "a7e8de822e0b1979f08767c751f6c8a9c1d4ad86",
                            "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/dax/super.c"
                    ],
                    "versions": [
                        {
                            "version": "4.12",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.12",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.4.189",
                            "lessThanOrEqual": "5.4.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.110",
                            "lessThanOrEqual": "5.10.*",
                            "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": "4.12",
                                    "versionEndExcluding": "5.4.189"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.12",
                                    "versionEndExcluding": "5.10.110"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.12",
                                    "versionEndExcluding": "5.17.2"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.12",
                                    "versionEndExcluding": "5.18"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/770d42fff12d8595adda9025a0b92091f543e775"
                },
                {
                    "url": "https://git.kernel.org/stable/c/ec376f5c11c88c0215d173599db8449cd4196759"
                },
                {
                    "url": "https://git.kernel.org/stable/c/e2951eaa9398415ac054b7bd80b8163b6838ead4"
                },
                {
                    "url": "https://git.kernel.org/stable/c/f2a1e0eb70c2d954176c07d75d28742bde30e9f3"
                },
                {
                    "url": "https://git.kernel.org/stable/c/b786abe7c67c6ef71410c8e23292b3091d616ad1"
                },
                {
                    "url": "https://git.kernel.org/stable/c/a7e8de822e0b1979f08767c751f6c8a9c1d4ad86"
                }
            ],
            "title": "dax: make sure inodes are flushed before destroy cache",
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}