CVE-2023-54194 (GCVE-0-2023-54194)

Vulnerability from cvelistv5 – Published: 2025-12-30 12:09 – Updated: 2026-05-11 19:57
VLAI
Title
exfat: use kvmalloc_array/kvfree instead of kmalloc_array/kfree
Summary
In the Linux kernel, the following vulnerability has been resolved: exfat: use kvmalloc_array/kvfree instead of kmalloc_array/kfree The call stack shown below is a scenario in the Linux 4.19 kernel. Allocating memory failed where exfat fs use kmalloc_array due to system memory fragmentation, while the u-disk was inserted without recognition. Devices such as u-disk using the exfat file system are pluggable and may be insert into the system at any time. However, long-term running systems cannot guarantee the continuity of physical memory. Therefore, it's necessary to address this issue. Binder:2632_6: page allocation failure: order:4, mode:0x6040c0(GFP_KERNEL|__GFP_COMP), nodemask=(null) Call trace: [242178.097582] dump_backtrace+0x0/0x4 [242178.097589] dump_stack+0xf4/0x134 [242178.097598] warn_alloc+0xd8/0x144 [242178.097603] __alloc_pages_nodemask+0x1364/0x1384 [242178.097608] kmalloc_order+0x2c/0x510 [242178.097612] kmalloc_order_trace+0x40/0x16c [242178.097618] __kmalloc+0x360/0x408 [242178.097624] load_alloc_bitmap+0x160/0x284 [242178.097628] exfat_fill_super+0xa3c/0xe7c [242178.097635] mount_bdev+0x2e8/0x3a0 [242178.097638] exfat_fs_mount+0x40/0x50 [242178.097643] mount_fs+0x138/0x2e8 [242178.097649] vfs_kern_mount+0x90/0x270 [242178.097655] do_mount+0x798/0x173c [242178.097659] ksys_mount+0x114/0x1ac [242178.097665] __arm64_sys_mount+0x24/0x34 [242178.097671] el0_svc_common+0xb8/0x1b8 [242178.097676] el0_svc_handler+0x74/0x90 [242178.097681] el0_svc+0x8/0x340 By analyzing the exfat code,we found that continuous physical memory is not required here,so kvmalloc_array is used can solve this problem.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7018 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 1e49a94cf707204b66a3fb242f2814712c941f52 , < 79d16a84ea41272dfcb0c00f9798ddd0edd8098d (git)
Affected: 1e49a94cf707204b66a3fb242f2814712c941f52 , < 8a34a242cf03211cc89f68308d149b793f63c479 (git)
Affected: 1e49a94cf707204b66a3fb242f2814712c941f52 , < 1427a7e96fb90d0896f74f5bcd21feb03cc7c3d0 (git)
Affected: 1e49a94cf707204b66a3fb242f2814712c941f52 , < 0c5c3e8a2550b6b2a304b45f260296db9c09df96 (git)
Affected: 1e49a94cf707204b66a3fb242f2814712c941f52 , < daf60d6cca26e50d65dac374db92e58de745ad26 (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.7
Unaffected: 0 , < 5.7 (semver)
Unaffected: 5.10.190 , ≤ 5.10.* (semver)
Unaffected: 5.15.126 , ≤ 5.15.* (semver)
Unaffected: 6.1.45 , ≤ 6.1.* (semver)
Unaffected: 6.4.10 , ≤ 6.4.* (semver)
Unaffected: 6.5 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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{
  "containers": {
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          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
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          "vendor": "Linux",
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              "versionType": "semver"
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      "cpeApplicability": [
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      "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\u0027s 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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T19:57:17.280Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/79d16a84ea41272dfcb0c00f9798ddd0edd8098d"
        },
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          "url": "https://git.kernel.org/stable/c/8a34a242cf03211cc89f68308d149b793f63c479"
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        },
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          "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",
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        "engine": "bippy-1.2.0"
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    "assignerShortName": "Linux",
    "cveId": "CVE-2023-54194",
    "datePublished": "2025-12-30T12:09:01.436Z",
    "dateReserved": "2025-12-30T12:06:44.498Z",
    "dateUpdated": "2026-05-11T19:57:17.280Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
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      "date": "2026-11-01",
      "epss": "0.00208",
      "percentile": "0.10973"
    },
    "nvd": {
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            "affectedData": [
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                "defaultStatus": "unaffected",
                "product": "Linux",
                "programFiles": [
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                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
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                    "versionType": "git"
                  },
                  {
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                    "status": "affected",
                    "version": "1e49a94cf707204b66a3fb242f2814712c941f52",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "1427a7e96fb90d0896f74f5bcd21feb03cc7c3d0",
                    "status": "affected",
                    "version": "1e49a94cf707204b66a3fb242f2814712c941f52",
                    "versionType": "git"
                  },
                  {
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                    "versionType": "git"
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                    "versionType": "git"
                  }
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                "vendor": "Linux",
                "versions": [
                  {
                    "status": "affected",
                    "version": "5.7"
                  },
                  {
                    "lessThan": "5.7",
                    "status": "unaffected",
                    "version": "0",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.10.*",
                    "status": "unaffected",
                    "version": "5.10.190",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.15.*",
                    "status": "unaffected",
                    "version": "5.15.126",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.1.*",
                    "status": "unaffected",
                    "version": "6.1.45",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.4.*",
                    "status": "unaffected",
                    "version": "6.4.10",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "*",
                    "status": "unaffected",
                    "version": "6.5",
                    "versionType": "original_commit_for_fix"
                  }
                ]
              }
            ],
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
          }
        ],
        "cveTags": [],
        "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\u0027s 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."
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nexfat: usar kvmalloc_array/kvfree en lugar de kmalloc_array/kfree\n\nLa pila de llamadas que se muestra a continuaci\u00f3n es un escenario en el kernel de Linux 4.19.\nLa asignaci\u00f3n de memoria fall\u00f3 donde el sistema de archivos exfat usa kmalloc_array debido a la fragmentaci\u00f3n de la memoria del sistema, mientras el u-disk fue insertado sin reconocimiento.\nDispositivos como el u-disk que usan el sistema de archivos exfat son conectables y pueden ser insertados en el sistema en cualquier momento.\nSin embargo, los sistemas de ejecuci\u00f3n a largo plazo no pueden garantizar la continuidad de la memoria f\u00edsica. Por lo tanto, es necesario abordar este problema.\n\nBinder:2632_6: fallo de asignaci\u00f3n de p\u00e1gina: orden:4,\n modo:0x6040c0(GFP_KERNEL|__GFP_COMP), nodemask=(null)\nTraza de llamadas:\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\nAl analizar el c\u00f3digo exfat, encontramos que la memoria f\u00edsica continua no es necesaria aqu\u00ed, por lo que el uso de kvmalloc_array puede resolver este problema."
          }
        ],
        "id": "CVE-2023-54194",
        "lastModified": "2026-10-28T19:10:00.193",
        "metrics": {},
        "published": "2025-12-30T13:16:07.437",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/0c5c3e8a2550b6b2a304b45f260296db9c09df96"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/1427a7e96fb90d0896f74f5bcd21feb03cc7c3d0"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/79d16a84ea41272dfcb0c00f9798ddd0edd8098d"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/8a34a242cf03211cc89f68308d149b793f63c479"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/daf60d6cca26e50d65dac374db92e58de745ad26"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Deferred"
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-06-30T10:25:06+00:00",
      "cve": "CVE-2023-54194",
      "id": "CVE-2023-54194",
      "initial_release_date": "2023-01-01T00:00:00+00:00",
      "product_status:fixed": "280",
      "product_status:known_affected": "22",
      "product_status:known_not_affected": "174",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: exfat: use kvmalloc_array/kvfree instead of kmalloc_array/kfree",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-54194.json",
      "version": "3"
    }
  }
}



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