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CVE-2022-50556 (GCVE-0-2022-50556)

Vulnerability from cvelistv5 – Published: 2025-10-22 13:23 – Updated: 2026-05-11 19:21
VLAI
Title
drm: Fix potential null-ptr-deref due to drmm_mode_config_init()
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
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 6b4959f43a04e12d39c5700607727f2cbcfeac31 , < 5ae70041a6d7de62a0cdb2bbcfe0c9cf753035d0 (git)
Affected: 6b4959f43a04e12d39c5700607727f2cbcfeac31 , < d06e827a65a6bcd2e329045d891d0739cec1cf4a (git)
Affected: 6b4959f43a04e12d39c5700607727f2cbcfeac31 , < b14147464251f66e38fa39f0aae9780466db8610 (git)
Affected: 6b4959f43a04e12d39c5700607727f2cbcfeac31 , < 961620ad67611a7320a49f4b6f3c5e2906833a03 (git)
Affected: 6b4959f43a04e12d39c5700607727f2cbcfeac31 , < 834c23e4f798dcdc8af251b3c428ceef94741991 (git)
guessed Create a notification for this product.
Linux Linux Affected: 4.0
Unaffected: 0 , < 4.0 (semver)
Unaffected: 5.10.173 , ≤ 5.10.* (semver)
Unaffected: 5.15.99 , ≤ 5.15.* (semver)
Unaffected: 6.1.16 , ≤ 6.1.* (semver)
Unaffected: 6.2.3 , ≤ 6.2.* (semver)
Unaffected: 6.3 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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          "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"
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        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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    "datePublished": "2025-10-22T13:23:17.527Z",
    "dateReserved": "2025-10-22T13:20:23.758Z",
    "dateUpdated": "2026-05-11T19:21:42.566Z",
    "state": "PUBLISHED"
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            "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"
          }
        ],
        "id": "CVE-2022-50556",
        "lastModified": "2026-06-17T05:23:47.193",
        "metrics": {},
        "published": "2025-10-22T14:15:39.673",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Deferred"
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-07-21T19:08:31+00:00",
      "cve": "CVE-2022-50556",
      "id": "CVE-2022-50556",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:fixed": "120",
      "product_status:known_affected": "152",
      "product_status:known_not_affected": "90",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: drm: Fix potential null-ptr-deref due to drmm_mode_config_init()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-50556.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-29T02:20:05Z",
      "cve": "CVE-2022-50556",
      "id": "CVE-2022-50556",
      "initial_release_date": "2025-10-25T00:14:57Z",
      "product_status:known_affected": "544",
      "product_status:known_not_affected": "136",
      "product_status:recommended": "245",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-50556",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-50556.json",
      "version": "30"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


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