{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2023-54194",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-12-30T12:06:44.498Z",
        "datePublished": "2025-12-30T12:09:01.436Z",
        "dateUpdated": "2026-05-11T19:57:17.280Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T19:57:17.280Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nexfat: use kvmalloc_array/kvfree instead of kmalloc_array/kfree\n\nThe call stack shown below is a scenario in the Linux 4.19 kernel.\nAllocating memory failed where exfat fs use kmalloc_array due to\nsystem memory fragmentation, while the u-disk was inserted without\nrecognition.\nDevices such as u-disk using the exfat file system are pluggable and\nmay be insert into the system at any time.\nHowever, long-term running systems cannot guarantee the continuity of\nphysical memory. Therefore, it's necessary to address this issue.\n\nBinder:2632_6: page allocation failure: order:4,\n mode:0x6040c0(GFP_KERNEL|__GFP_COMP), nodemask=(null)\nCall trace:\n[242178.097582]  dump_backtrace+0x0/0x4\n[242178.097589]  dump_stack+0xf4/0x134\n[242178.097598]  warn_alloc+0xd8/0x144\n[242178.097603]  __alloc_pages_nodemask+0x1364/0x1384\n[242178.097608]  kmalloc_order+0x2c/0x510\n[242178.097612]  kmalloc_order_trace+0x40/0x16c\n[242178.097618]  __kmalloc+0x360/0x408\n[242178.097624]  load_alloc_bitmap+0x160/0x284\n[242178.097628]  exfat_fill_super+0xa3c/0xe7c\n[242178.097635]  mount_bdev+0x2e8/0x3a0\n[242178.097638]  exfat_fs_mount+0x40/0x50\n[242178.097643]  mount_fs+0x138/0x2e8\n[242178.097649]  vfs_kern_mount+0x90/0x270\n[242178.097655]  do_mount+0x798/0x173c\n[242178.097659]  ksys_mount+0x114/0x1ac\n[242178.097665]  __arm64_sys_mount+0x24/0x34\n[242178.097671]  el0_svc_common+0xb8/0x1b8\n[242178.097676]  el0_svc_handler+0x74/0x90\n[242178.097681]  el0_svc+0x8/0x340\n\nBy analyzing the exfat code,we found that continuous physical memory\nis not required here,so kvmalloc_array is used can solve this problem."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/exfat/balloc.c"
                    ],
                    "versions": [
                        {
                            "version": "1e49a94cf707204b66a3fb242f2814712c941f52",
                            "lessThan": "79d16a84ea41272dfcb0c00f9798ddd0edd8098d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "1e49a94cf707204b66a3fb242f2814712c941f52",
                            "lessThan": "8a34a242cf03211cc89f68308d149b793f63c479",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "1e49a94cf707204b66a3fb242f2814712c941f52",
                            "lessThan": "1427a7e96fb90d0896f74f5bcd21feb03cc7c3d0",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "1e49a94cf707204b66a3fb242f2814712c941f52",
                            "lessThan": "0c5c3e8a2550b6b2a304b45f260296db9c09df96",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "1e49a94cf707204b66a3fb242f2814712c941f52",
                            "lessThan": "daf60d6cca26e50d65dac374db92e58de745ad26",
                            "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/exfat/balloc.c"
                    ],
                    "versions": [
                        {
                            "version": "5.7",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.7",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.190",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.126",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.45",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.4.10",
                            "lessThanOrEqual": "6.4.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.5",
                            "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": "5.7",
                                    "versionEndExcluding": "5.10.190"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.7",
                                    "versionEndExcluding": "5.15.126"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.7",
                                    "versionEndExcluding": "6.1.45"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.7",
                                    "versionEndExcluding": "6.4.10"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.7",
                                    "versionEndExcluding": "6.5"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/79d16a84ea41272dfcb0c00f9798ddd0edd8098d"
                },
                {
                    "url": "https://git.kernel.org/stable/c/8a34a242cf03211cc89f68308d149b793f63c479"
                },
                {
                    "url": "https://git.kernel.org/stable/c/1427a7e96fb90d0896f74f5bcd21feb03cc7c3d0"
                },
                {
                    "url": "https://git.kernel.org/stable/c/0c5c3e8a2550b6b2a304b45f260296db9c09df96"
                },
                {
                    "url": "https://git.kernel.org/stable/c/daf60d6cca26e50d65dac374db92e58de745ad26"
                }
            ],
            "title": "exfat: use kvmalloc_array/kvfree instead of kmalloc_array/kfree",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}