CVE-2022-50556 (GCVE-0-2022-50556)
Vulnerability from cvelistv5
Published
2025-10-22 13:23
Modified
2025-10-22 13:23
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: drm: Fix potential null-ptr-deref due to drmm_mode_config_init() drmm_mode_config_init() will call drm_mode_create_standard_properties() and won't check the ret value. When drm_mode_create_standard_properties() failed due to alloc, property will be a NULL pointer and may causes the null-ptr-deref. Fix the null-ptr-deref by adding the ret value check. Found null-ptr-deref while testing insert module bochs: general protection fault, probably for non-canonical address 0xdffffc000000000c: 0000 [#1] SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000060-0x0000000000000067] CPU: 3 PID: 249 Comm: modprobe Not tainted 6.1.0-rc1+ #364 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.15.0-0-g2dd4b9b3f840-prebuilt.qemu.org 04/01/2014 RIP: 0010:drm_object_attach_property+0x73/0x3c0 [drm] Call Trace: <TASK> __drm_connector_init+0xb6c/0x1100 [drm] bochs_pci_probe.cold.11+0x4cb/0x7fe [bochs] pci_device_probe+0x17d/0x340 really_probe+0x1db/0x5d0 __driver_probe_device+0x1e7/0x250 driver_probe_device+0x4a/0x120 __driver_attach+0xcd/0x2c0 bus_for_each_dev+0x11a/0x1b0 bus_add_driver+0x3d7/0x500 driver_register+0x18e/0x320 do_one_initcall+0xc4/0x3e0 do_init_module+0x1b4/0x630 load_module+0x5dca/0x7230 __do_sys_finit_module+0x100/0x170 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7ff65af9f839
References
Impacted products
Vendor Product Version
Linux Linux Version: 6b4959f43a04e12d39c5700607727f2cbcfeac31
Version: 6b4959f43a04e12d39c5700607727f2cbcfeac31
Version: 6b4959f43a04e12d39c5700607727f2cbcfeac31
Version: 6b4959f43a04e12d39c5700607727f2cbcfeac31
Version: 6b4959f43a04e12d39c5700607727f2cbcfeac31
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/drm_mode_config.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/drm_mode_config.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.0"
            },
            {
              "lessThan": "4.0",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.173",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.99",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.16",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.2.*",
              "status": "unaffected",
              "version": "6.2.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
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                  "versionEndExcluding": "5.10.173",
                  "versionStartIncluding": "4.0",
                  "vulnerable": true
                },
                {
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                  "versionEndExcluding": "5.15.99",
                  "versionStartIncluding": "4.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.16",
                  "versionStartIncluding": "4.0",
                  "vulnerable": true
                },
                {
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                  "versionEndExcluding": "6.2.3",
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                {
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                  "versionEndExcluding": "6.3",
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                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm: Fix potential null-ptr-deref due to drmm_mode_config_init()\n\ndrmm_mode_config_init() will call drm_mode_create_standard_properties()\nand won\u0027t check the ret value. When drm_mode_create_standard_properties()\nfailed due to alloc, property will be a NULL pointer and may causes the\nnull-ptr-deref. Fix the null-ptr-deref by adding the ret value check.\n\nFound null-ptr-deref while testing insert module bochs:\ngeneral protection fault, probably for non-canonical address\n    0xdffffc000000000c: 0000 [#1] SMP KASAN PTI\nKASAN: null-ptr-deref in range [0x0000000000000060-0x0000000000000067]\nCPU: 3 PID: 249 Comm: modprobe Not tainted 6.1.0-rc1+ #364\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS\nrel-1.15.0-0-g2dd4b9b3f840-prebuilt.qemu.org 04/01/2014\nRIP: 0010:drm_object_attach_property+0x73/0x3c0 [drm]\nCall Trace:\n \u003cTASK\u003e\n __drm_connector_init+0xb6c/0x1100 [drm]\n bochs_pci_probe.cold.11+0x4cb/0x7fe [bochs]\n pci_device_probe+0x17d/0x340\n really_probe+0x1db/0x5d0\n __driver_probe_device+0x1e7/0x250\n driver_probe_device+0x4a/0x120\n __driver_attach+0xcd/0x2c0\n bus_for_each_dev+0x11a/0x1b0\n bus_add_driver+0x3d7/0x500\n driver_register+0x18e/0x320\n do_one_initcall+0xc4/0x3e0\n do_init_module+0x1b4/0x630\n load_module+0x5dca/0x7230\n __do_sys_finit_module+0x100/0x170\n do_syscall_64+0x3f/0x90\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\nRIP: 0033:0x7ff65af9f839"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-10-22T13:23:17.527Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/5ae70041a6d7de62a0cdb2bbcfe0c9cf753035d0"
        },
        {
          "url": "https://git.kernel.org/stable/c/d06e827a65a6bcd2e329045d891d0739cec1cf4a"
        },
        {
          "url": "https://git.kernel.org/stable/c/b14147464251f66e38fa39f0aae9780466db8610"
        },
        {
          "url": "https://git.kernel.org/stable/c/961620ad67611a7320a49f4b6f3c5e2906833a03"
        },
        {
          "url": "https://git.kernel.org/stable/c/834c23e4f798dcdc8af251b3c428ceef94741991"
        }
      ],
      "title": "drm: Fix potential null-ptr-deref due to drmm_mode_config_init()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50556",
    "datePublished": "2025-10-22T13:23:17.527Z",
    "dateReserved": "2025-10-22T13:20:23.758Z",
    "dateUpdated": "2025-10-22T13:23:17.527Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-50556\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-10-22T14:15:39.673\",\"lastModified\":\"2025-10-22T21:12:48.953\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ndrm: Fix potential null-ptr-deref due to drmm_mode_config_init()\\n\\ndrmm_mode_config_init() will call drm_mode_create_standard_properties()\\nand won\u0027t check the ret value. When drm_mode_create_standard_properties()\\nfailed due to alloc, property will be a NULL pointer and may causes the\\nnull-ptr-deref. Fix the null-ptr-deref by adding the ret value check.\\n\\nFound null-ptr-deref while testing insert module bochs:\\ngeneral protection fault, probably for non-canonical address\\n    0xdffffc000000000c: 0000 [#1] SMP KASAN PTI\\nKASAN: null-ptr-deref in range [0x0000000000000060-0x0000000000000067]\\nCPU: 3 PID: 249 Comm: modprobe Not tainted 6.1.0-rc1+ #364\\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS\\nrel-1.15.0-0-g2dd4b9b3f840-prebuilt.qemu.org 04/01/2014\\nRIP: 0010:drm_object_attach_property+0x73/0x3c0 [drm]\\nCall Trace:\\n \u003cTASK\u003e\\n __drm_connector_init+0xb6c/0x1100 [drm]\\n bochs_pci_probe.cold.11+0x4cb/0x7fe [bochs]\\n pci_device_probe+0x17d/0x340\\n really_probe+0x1db/0x5d0\\n __driver_probe_device+0x1e7/0x250\\n driver_probe_device+0x4a/0x120\\n __driver_attach+0xcd/0x2c0\\n bus_for_each_dev+0x11a/0x1b0\\n bus_add_driver+0x3d7/0x500\\n driver_register+0x18e/0x320\\n do_one_initcall+0xc4/0x3e0\\n do_init_module+0x1b4/0x630\\n load_module+0x5dca/0x7230\\n __do_sys_finit_module+0x100/0x170\\n do_syscall_64+0x3f/0x90\\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\\nRIP: 0033:0x7ff65af9f839\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/5ae70041a6d7de62a0cdb2bbcfe0c9cf753035d0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/834c23e4f798dcdc8af251b3c428ceef94741991\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/961620ad67611a7320a49f4b6f3c5e2906833a03\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b14147464251f66e38fa39f0aae9780466db8610\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/d06e827a65a6bcd2e329045d891d0739cec1cf4a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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