CVE-2022-50269 (GCVE-0-2022-50269)
Vulnerability from cvelistv5
Published
2025-09-15 14:21
Modified
2025-09-15 14:21
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/vkms: Fix memory leak in vkms_init() A memory leak was reported after the vkms module install failed. unreferenced object 0xffff88810bc28520 (size 16): comm "modprobe", pid 9662, jiffies 4298009455 (age 42.590s) hex dump (first 16 bytes): 01 01 00 64 81 88 ff ff 00 00 dc 0a 81 88 ff ff ...d............ backtrace: [<00000000e7561ff8>] kmalloc_trace+0x27/0x60 [<000000000b1954a0>] 0xffffffffc45200a9 [<00000000abbf1da0>] do_one_initcall+0xd0/0x4f0 [<000000001505ee87>] do_init_module+0x1a4/0x680 [<00000000958079ad>] load_module+0x6249/0x7110 [<00000000117e4696>] __do_sys_finit_module+0x140/0x200 [<00000000f74b12d2>] do_syscall_64+0x35/0x80 [<000000008fc6fcde>] entry_SYSCALL_64_after_hwframe+0x46/0xb0 The reason is that the vkms_init() returns without checking the return value of vkms_create(), and if the vkms_create() failed, the config allocated at the beginning of vkms_init() is leaked. vkms_init() config = kmalloc(...) # config allocated ... return vkms_create() # vkms_create failed and config is leaked Fix this problem by checking return value of vkms_create() and free the config if error happened.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/07ab77154d6fd2d67e465ab5ce30083709950f02
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0d0b368b9d104b437e1f4850ae94bdb9a3601e89
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bad13de764888b765ceaa4668893b52bd16653cc
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bebd60ec3bf21062f103e32e6203c6daabdbd51b
Impacted products
Vendor Product Version
Linux Linux Version: 2df7af93fdadb9ba8226fe443fae15ecdefda2a6
Version: 2df7af93fdadb9ba8226fe443fae15ecdefda2a6
Version: 2df7af93fdadb9ba8226fe443fae15ecdefda2a6
Version: 2df7af93fdadb9ba8226fe443fae15ecdefda2a6
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   Linux Linux Version: 5.12
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/vkms/vkms_drv.c"
          ],
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              "version": "5.15.99",
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              "status": "unaffected",
              "version": "6.1.16",
              "versionType": "semver"
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              "version": "6.2.3",
              "versionType": "semver"
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      "cpeApplicability": [
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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\ndrm/vkms: Fix memory leak in vkms_init()\n\nA memory leak was reported after the vkms module install failed.\n\nunreferenced object 0xffff88810bc28520 (size 16):\n  comm \"modprobe\", pid 9662, jiffies 4298009455 (age 42.590s)\n  hex dump (first 16 bytes):\n    01 01 00 64 81 88 ff ff 00 00 dc 0a 81 88 ff ff  ...d............\n  backtrace:\n    [\u003c00000000e7561ff8\u003e] kmalloc_trace+0x27/0x60\n    [\u003c000000000b1954a0\u003e] 0xffffffffc45200a9\n    [\u003c00000000abbf1da0\u003e] do_one_initcall+0xd0/0x4f0\n    [\u003c000000001505ee87\u003e] do_init_module+0x1a4/0x680\n    [\u003c00000000958079ad\u003e] load_module+0x6249/0x7110\n    [\u003c00000000117e4696\u003e] __do_sys_finit_module+0x140/0x200\n    [\u003c00000000f74b12d2\u003e] do_syscall_64+0x35/0x80\n    [\u003c000000008fc6fcde\u003e] entry_SYSCALL_64_after_hwframe+0x46/0xb0\n\nThe reason is that the vkms_init() returns without checking the return\nvalue of vkms_create(), and if the vkms_create() failed, the config\nallocated at the beginning of vkms_init() is leaked.\n\n vkms_init()\n   config = kmalloc(...) # config allocated\n   ...\n   return vkms_create() # vkms_create failed and config is leaked\n\nFix this problem by checking return value of vkms_create() and free the\nconfig if error happened."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-09-15T14:21:05.485Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/bad13de764888b765ceaa4668893b52bd16653cc"
        },
        {
          "url": "https://git.kernel.org/stable/c/bebd60ec3bf21062f103e32e6203c6daabdbd51b"
        },
        {
          "url": "https://git.kernel.org/stable/c/07ab77154d6fd2d67e465ab5ce30083709950f02"
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        {
          "url": "https://git.kernel.org/stable/c/0d0b368b9d104b437e1f4850ae94bdb9a3601e89"
        }
      ],
      "title": "drm/vkms: Fix memory leak in vkms_init()",
      "x_generator": {
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  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50269",
    "datePublished": "2025-09-15T14:21:05.485Z",
    "dateReserved": "2025-09-15T13:58:00.975Z",
    "dateUpdated": "2025-09-15T14:21:05.485Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-50269\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-09-15T15:15:37.707\",\"lastModified\":\"2025-09-15T15:22:27.090\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ndrm/vkms: Fix memory leak in vkms_init()\\n\\nA memory leak was reported after the vkms module install failed.\\n\\nunreferenced object 0xffff88810bc28520 (size 16):\\n  comm \\\"modprobe\\\", pid 9662, jiffies 4298009455 (age 42.590s)\\n  hex dump (first 16 bytes):\\n    01 01 00 64 81 88 ff ff 00 00 dc 0a 81 88 ff ff  ...d............\\n  backtrace:\\n    [\u003c00000000e7561ff8\u003e] kmalloc_trace+0x27/0x60\\n    [\u003c000000000b1954a0\u003e] 0xffffffffc45200a9\\n    [\u003c00000000abbf1da0\u003e] do_one_initcall+0xd0/0x4f0\\n    [\u003c000000001505ee87\u003e] do_init_module+0x1a4/0x680\\n    [\u003c00000000958079ad\u003e] load_module+0x6249/0x7110\\n    [\u003c00000000117e4696\u003e] __do_sys_finit_module+0x140/0x200\\n    [\u003c00000000f74b12d2\u003e] do_syscall_64+0x35/0x80\\n    [\u003c000000008fc6fcde\u003e] entry_SYSCALL_64_after_hwframe+0x46/0xb0\\n\\nThe reason is that the vkms_init() returns without checking the return\\nvalue of vkms_create(), and if the vkms_create() failed, the config\\nallocated at the beginning of vkms_init() is leaked.\\n\\n vkms_init()\\n   config = kmalloc(...) # config allocated\\n   ...\\n   return vkms_create() # vkms_create failed and config is leaked\\n\\nFix this problem by checking return value of vkms_create() and free the\\nconfig if error happened.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/07ab77154d6fd2d67e465ab5ce30083709950f02\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/0d0b368b9d104b437e1f4850ae94bdb9a3601e89\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/bad13de764888b765ceaa4668893b52bd16653cc\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/bebd60ec3bf21062f103e32e6203c6daabdbd51b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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