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CVE-2022-50772 (GCVE-0-2022-50772)

Vulnerability from cvelistv5 – Published: 2025-12-24 13:06 – Updated: 2026-05-11 19:25
VLAI
Title
netdevsim: fix memory leak in nsim_bus_dev_new()
Summary
In the Linux kernel, the following vulnerability has been resolved: netdevsim: fix memory leak in nsim_bus_dev_new() If device_register() failed in nsim_bus_dev_new(), the value of reference in nsim_bus_dev->dev is 1. obj->name in nsim_bus_dev->dev will not be released. unreferenced object 0xffff88810352c480 (size 16): comm "echo", pid 5691, jiffies 4294945921 (age 133.270s) hex dump (first 16 bytes): 6e 65 74 64 65 76 73 69 6d 31 00 00 00 00 00 00 netdevsim1...... backtrace: [<000000005e2e5e26>] __kmalloc_node_track_caller+0x3a/0xb0 [<0000000094ca4fc8>] kvasprintf+0xc3/0x160 [<00000000aad09bcc>] kvasprintf_const+0x55/0x180 [<000000009bac868d>] kobject_set_name_vargs+0x56/0x150 [<000000007c1a5d70>] dev_set_name+0xbb/0xf0 [<00000000ad0d126b>] device_add+0x1f8/0x1cb0 [<00000000c222ae24>] new_device_store+0x3b6/0x5e0 [<0000000043593421>] bus_attr_store+0x72/0xa0 [<00000000cbb1833a>] sysfs_kf_write+0x106/0x160 [<00000000d0dedb8a>] kernfs_fop_write_iter+0x3a8/0x5a0 [<00000000770b66e2>] vfs_write+0x8f0/0xc80 [<0000000078bb39be>] ksys_write+0x106/0x210 [<00000000005e55a4>] do_syscall_64+0x35/0x80 [<00000000eaa40bbc>] entry_SYSCALL_64_after_hwframe+0x46/0xb0
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 40e4fe4ce115c409c3e2fbb247085103ef1cc755 , < 77579e4065295071fbd9662f03430dca5b50b086 (git)
Affected: 40e4fe4ce115c409c3e2fbb247085103ef1cc755 , < cf2010aa1c739bab067cbc90b690d28eaa0b47da (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.2
Unaffected: 0 , < 5.2 (semver)
Unaffected: 6.0.7 , ≤ 6.0.* (semver)
Unaffected: 6.1 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/netdevsim/bus.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "77579e4065295071fbd9662f03430dca5b50b086",
              "status": "affected",
              "version": "40e4fe4ce115c409c3e2fbb247085103ef1cc755",
              "versionType": "git"
            },
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              "versionType": "git"
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          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/netdevsim/bus.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.2"
            },
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
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              "status": "unaffected",
              "version": "6.0.7",
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              "version": "6.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.0.7",
                  "versionStartIncluding": "5.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1",
                  "versionStartIncluding": "5.2",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetdevsim: fix memory leak in nsim_bus_dev_new()\n\nIf device_register() failed in nsim_bus_dev_new(), the value of reference\nin nsim_bus_dev-\u003edev is 1. obj-\u003ename in nsim_bus_dev-\u003edev will not be\nreleased.\n\nunreferenced object 0xffff88810352c480 (size 16):\n  comm \"echo\", pid 5691, jiffies 4294945921 (age 133.270s)\n  hex dump (first 16 bytes):\n    6e 65 74 64 65 76 73 69 6d 31 00 00 00 00 00 00  netdevsim1......\n  backtrace:\n    [\u003c000000005e2e5e26\u003e] __kmalloc_node_track_caller+0x3a/0xb0\n    [\u003c0000000094ca4fc8\u003e] kvasprintf+0xc3/0x160\n    [\u003c00000000aad09bcc\u003e] kvasprintf_const+0x55/0x180\n    [\u003c000000009bac868d\u003e] kobject_set_name_vargs+0x56/0x150\n    [\u003c000000007c1a5d70\u003e] dev_set_name+0xbb/0xf0\n    [\u003c00000000ad0d126b\u003e] device_add+0x1f8/0x1cb0\n    [\u003c00000000c222ae24\u003e] new_device_store+0x3b6/0x5e0\n    [\u003c0000000043593421\u003e] bus_attr_store+0x72/0xa0\n    [\u003c00000000cbb1833a\u003e] sysfs_kf_write+0x106/0x160\n    [\u003c00000000d0dedb8a\u003e] kernfs_fop_write_iter+0x3a8/0x5a0\n    [\u003c00000000770b66e2\u003e] vfs_write+0x8f0/0xc80\n    [\u003c0000000078bb39be\u003e] ksys_write+0x106/0x210\n    [\u003c00000000005e55a4\u003e] do_syscall_64+0x35/0x80\n    [\u003c00000000eaa40bbc\u003e] entry_SYSCALL_64_after_hwframe+0x46/0xb0"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T19:25:14.704Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/77579e4065295071fbd9662f03430dca5b50b086"
        },
        {
          "url": "https://git.kernel.org/stable/c/cf2010aa1c739bab067cbc90b690d28eaa0b47da"
        }
      ],
      "title": "netdevsim: fix memory leak in nsim_bus_dev_new()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50772",
    "datePublished": "2025-12-24T13:06:01.170Z",
    "dateReserved": "2025-12-24T13:02:21.547Z",
    "dateUpdated": "2026-05-11T19:25:14.704Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2022-50772",
      "date": "2026-09-17",
      "epss": "0.00226",
      "percentile": "0.1349"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Linux",
                "programFiles": [
                  "drivers/net/netdevsim/bus.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "lessThan": "77579e4065295071fbd9662f03430dca5b50b086",
                    "status": "affected",
                    "version": "40e4fe4ce115c409c3e2fbb247085103ef1cc755",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "cf2010aa1c739bab067cbc90b690d28eaa0b47da",
                    "status": "affected",
                    "version": "40e4fe4ce115c409c3e2fbb247085103ef1cc755",
                    "versionType": "git"
                  }
                ]
              },
              {
                "defaultStatus": "affected",
                "product": "Linux",
                "programFiles": [
                  "drivers/net/netdevsim/bus.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "status": "affected",
                    "version": "5.2"
                  },
                  {
                    "lessThan": "5.2",
                    "status": "unaffected",
                    "version": "0",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.0.*",
                    "status": "unaffected",
                    "version": "6.0.7",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "*",
                    "status": "unaffected",
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                  }
                ]
              }
            ],
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetdevsim: fix memory leak in nsim_bus_dev_new()\n\nIf device_register() failed in nsim_bus_dev_new(), the value of reference\nin nsim_bus_dev-\u003edev is 1. obj-\u003ename in nsim_bus_dev-\u003edev will not be\nreleased.\n\nunreferenced object 0xffff88810352c480 (size 16):\n  comm \"echo\", pid 5691, jiffies 4294945921 (age 133.270s)\n  hex dump (first 16 bytes):\n    6e 65 74 64 65 76 73 69 6d 31 00 00 00 00 00 00  netdevsim1......\n  backtrace:\n    [\u003c000000005e2e5e26\u003e] __kmalloc_node_track_caller+0x3a/0xb0\n    [\u003c0000000094ca4fc8\u003e] kvasprintf+0xc3/0x160\n    [\u003c00000000aad09bcc\u003e] kvasprintf_const+0x55/0x180\n    [\u003c000000009bac868d\u003e] kobject_set_name_vargs+0x56/0x150\n    [\u003c000000007c1a5d70\u003e] dev_set_name+0xbb/0xf0\n    [\u003c00000000ad0d126b\u003e] device_add+0x1f8/0x1cb0\n    [\u003c00000000c222ae24\u003e] new_device_store+0x3b6/0x5e0\n    [\u003c0000000043593421\u003e] bus_attr_store+0x72/0xa0\n    [\u003c00000000cbb1833a\u003e] sysfs_kf_write+0x106/0x160\n    [\u003c00000000d0dedb8a\u003e] kernfs_fop_write_iter+0x3a8/0x5a0\n    [\u003c00000000770b66e2\u003e] vfs_write+0x8f0/0xc80\n    [\u003c0000000078bb39be\u003e] ksys_write+0x106/0x210\n    [\u003c00000000005e55a4\u003e] do_syscall_64+0x35/0x80\n    [\u003c00000000eaa40bbc\u003e] entry_SYSCALL_64_after_hwframe+0x46/0xb0"
          }
        ],
        "id": "CVE-2022-50772",
        "lastModified": "2026-06-17T05:24:09.117",
        "metrics": {},
        "published": "2025-12-24T13:16:04.020",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/77579e4065295071fbd9662f03430dca5b50b086"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/cf2010aa1c739bab067cbc90b690d28eaa0b47da"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Deferred"
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-07-21T18:47:47+00:00",
      "cve": "CVE-2022-50772",
      "id": "CVE-2022-50772",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:known_affected": "156",
      "product_status:known_not_affected": "118",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: Linux kernel: Denial of Service due to memory leak in netdevsim",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-50772.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "low",
      "current_release_date": "2026-09-02T01:59:30Z",
      "cve": "CVE-2022-50772",
      "id": "CVE-2022-50772",
      "initial_release_date": "2025-12-25T01:03:42Z",
      "product_status:known_affected": "201",
      "product_status:known_not_affected": "359",
      "product_status:recommended": "29",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-50772",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-50772.json",
      "version": "13"
    }
  }
}



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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.

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  • 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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Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.