CVE-2022-50304 (GCVE-0-2022-50304)

Vulnerability from cvelistv5 – Published: 2025-09-15 14:45 – Updated: 2025-09-15 14:45
VLAI?
Title
mtd: core: fix possible resource leak in init_mtd()
Summary
In the Linux kernel, the following vulnerability has been resolved: mtd: core: fix possible resource leak in init_mtd() I got the error report while inject fault in init_mtd(): sysfs: cannot create duplicate filename '/devices/virtual/bdi/mtd-0' Call Trace: <TASK> dump_stack_lvl+0x67/0x83 sysfs_warn_dup+0x60/0x70 sysfs_create_dir_ns+0x109/0x120 kobject_add_internal+0xce/0x2f0 kobject_add+0x98/0x110 device_add+0x179/0xc00 device_create_groups_vargs+0xf4/0x100 device_create+0x7b/0xb0 bdi_register_va.part.13+0x58/0x2d0 bdi_register+0x9b/0xb0 init_mtd+0x62/0x171 [mtd] do_one_initcall+0x6c/0x3c0 do_init_module+0x58/0x222 load_module+0x268e/0x27d0 __do_sys_finit_module+0xd5/0x140 do_syscall_64+0x37/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd </TASK> kobject_add_internal failed for mtd-0 with -EEXIST, don't try to register things with the same name in the same directory. Error registering mtd class or bdi: -17 If init_mtdchar() fails in init_mtd(), mtd_bdi will not be unregistered, as a result, we can't load the mtd module again, to fix this by calling bdi_unregister(mtd_bdi) after out_procfs label.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 445caaa20c4d6da74f426464f90513b81157ad77 , < 78816504100cbd8e6836df9f58cc4fbb8b262f1c (git)
Affected: 445caaa20c4d6da74f426464f90513b81157ad77 , < 26c304a3f136009c5a2a04e2bf3ac6aa25aabcb4 (git)
Affected: 445caaa20c4d6da74f426464f90513b81157ad77 , < 1aadf01e5076b9ab6bf294b9622335c651314895 (git)
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    Linux Linux Affected: 4.10
Unaffected: 0 , < 4.10 (semver)
Unaffected: 6.0.16 , ≤ 6.0.* (semver)
Unaffected: 6.1.2 , ≤ 6.1.* (semver)
Unaffected: 6.2 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/mtd/mtdcore.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
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          "vendor": "Linux",
          "versions": [
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              "version": "6.0.16",
              "versionType": "semver"
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            {
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              "status": "unaffected",
              "version": "6.1.2",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "6.2",
              "versionType": "original_commit_for_fix"
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        }
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          "nodes": [
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              "cpeMatch": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.0.16",
                  "versionStartIncluding": "4.10",
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              "negate": false,
              "operator": "OR"
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmtd: core: fix possible resource leak in init_mtd()\n\nI got the error report while inject fault in init_mtd():\n\nsysfs: cannot create duplicate filename \u0027/devices/virtual/bdi/mtd-0\u0027\nCall Trace:\n \u003cTASK\u003e\n dump_stack_lvl+0x67/0x83\n sysfs_warn_dup+0x60/0x70\n sysfs_create_dir_ns+0x109/0x120\n kobject_add_internal+0xce/0x2f0\n kobject_add+0x98/0x110\n device_add+0x179/0xc00\n device_create_groups_vargs+0xf4/0x100\n device_create+0x7b/0xb0\n bdi_register_va.part.13+0x58/0x2d0\n bdi_register+0x9b/0xb0\n init_mtd+0x62/0x171 [mtd]\n do_one_initcall+0x6c/0x3c0\n do_init_module+0x58/0x222\n load_module+0x268e/0x27d0\n __do_sys_finit_module+0xd5/0x140\n do_syscall_64+0x37/0x90\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\n \u003c/TASK\u003e\nkobject_add_internal failed for mtd-0 with -EEXIST, don\u0027t try to register\n\tthings with the same name in the same directory.\nError registering mtd class or bdi: -17\n\nIf init_mtdchar() fails in init_mtd(), mtd_bdi will not be unregistered,\nas a result, we can\u0027t load the mtd module again, to fix this by calling\nbdi_unregister(mtd_bdi) after out_procfs label."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-09-15T14:45:59.614Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/78816504100cbd8e6836df9f58cc4fbb8b262f1c"
        },
        {
          "url": "https://git.kernel.org/stable/c/26c304a3f136009c5a2a04e2bf3ac6aa25aabcb4"
        },
        {
          "url": "https://git.kernel.org/stable/c/1aadf01e5076b9ab6bf294b9622335c651314895"
        }
      ],
      "title": "mtd: core: fix possible resource leak in init_mtd()",
      "x_generator": {
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50304",
    "datePublished": "2025-09-15T14:45:59.614Z",
    "dateReserved": "2025-09-15T14:18:36.812Z",
    "dateUpdated": "2025-09-15T14:45:59.614Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}


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