CVE-2022-49793 (GCVE-0-2022-49793)

Vulnerability from cvelistv5 – Published: 2025-05-01 14:09 – Updated: 2025-05-04 08:45
VLAI?
Title
iio: trigger: sysfs: fix possible memory leak in iio_sysfs_trig_init()
Summary
In the Linux kernel, the following vulnerability has been resolved: iio: trigger: sysfs: fix possible memory leak in iio_sysfs_trig_init() dev_set_name() allocates memory for name, it need be freed when device_add() fails, call put_device() to give up the reference that hold in device_initialize(), so that it can be freed in kobject_cleanup() when the refcount hit to 0. Fault injection test can trigger this: unreferenced object 0xffff8e8340a7b4c0 (size 32): comm "modprobe", pid 243, jiffies 4294678145 (age 48.845s) hex dump (first 32 bytes): 69 69 6f 5f 73 79 73 66 73 5f 74 72 69 67 67 65 iio_sysfs_trigge 72 00 a7 40 83 8e ff ff 00 86 13 c4 f6 ee ff ff r..@............ backtrace: [<0000000074999de8>] __kmem_cache_alloc_node+0x1e9/0x360 [<00000000497fd30b>] __kmalloc_node_track_caller+0x44/0x1a0 [<000000003636c520>] kstrdup+0x2d/0x60 [<0000000032f84da2>] kobject_set_name_vargs+0x1e/0x90 [<0000000092efe493>] dev_set_name+0x4e/0x70
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 1f785681a87068f123d3e23da13b2c55ab4f93ac , < f68c96821b61d2c71a35dbb8bf90c347fad624d9 (git)
Affected: 1f785681a87068f123d3e23da13b2c55ab4f93ac , < 5a39382aa5411d64b25a71516c2c7480aab13bb7 (git)
Affected: 1f785681a87068f123d3e23da13b2c55ab4f93ac , < b47bb521961f027b4dcf8683337a7a1ba9e5ea1f (git)
Affected: 1f785681a87068f123d3e23da13b2c55ab4f93ac , < 0dd52e141afde089304de470148d311b05c14564 (git)
Affected: 1f785681a87068f123d3e23da13b2c55ab4f93ac , < 8dddf2699da296c84205582aaead6b43dd7e8c4b (git)
Affected: 1f785681a87068f123d3e23da13b2c55ab4f93ac , < 656f670613662b6cc77aad14112db2803ad18fa8 (git)
Affected: 1f785681a87068f123d3e23da13b2c55ab4f93ac , < 2c4e65285bdea23fd36d2ff376006ac64db6f42e (git)
Affected: 1f785681a87068f123d3e23da13b2c55ab4f93ac , < efa17e90e1711bdb084e3954fa44afb6647331c0 (git)
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    Linux Linux Affected: 3.0
Unaffected: 0 , < 3.0 (semver)
Unaffected: 4.9.334 , ≤ 4.9.* (semver)
Unaffected: 4.14.300 , ≤ 4.14.* (semver)
Unaffected: 4.19.267 , ≤ 4.19.* (semver)
Unaffected: 5.4.225 , ≤ 5.4.* (semver)
Unaffected: 5.10.156 , ≤ 5.10.* (semver)
Unaffected: 5.15.80 , ≤ 5.15.* (semver)
Unaffected: 6.0.10 , ≤ 6.0.* (semver)
Unaffected: 6.1 , ≤ * (original_commit_for_fix)
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{
  "containers": {
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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/iio/trigger/iio-trig-sysfs.c"
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          "vendor": "Linux",
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              "versionType": "semver"
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            {
              "lessThanOrEqual": "4.14.*",
              "status": "unaffected",
              "version": "4.14.300",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.267",
              "versionType": "semver"
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              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.225",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.156",
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              "lessThanOrEqual": "5.15.*",
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              "version": "6.0.10",
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              "status": "unaffected",
              "version": "6.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "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\niio: trigger: sysfs: fix possible memory leak in iio_sysfs_trig_init()\n\ndev_set_name() allocates memory for name, it need be freed\nwhen device_add() fails, call put_device() to give up the\nreference that hold in device_initialize(), so that it can\nbe freed in kobject_cleanup() when the refcount hit to 0.\n\nFault injection test can trigger this:\n\nunreferenced object 0xffff8e8340a7b4c0 (size 32):\n  comm \"modprobe\", pid 243, jiffies 4294678145 (age 48.845s)\n  hex dump (first 32 bytes):\n    69 69 6f 5f 73 79 73 66 73 5f 74 72 69 67 67 65  iio_sysfs_trigge\n    72 00 a7 40 83 8e ff ff 00 86 13 c4 f6 ee ff ff  r..@............\n  backtrace:\n    [\u003c0000000074999de8\u003e] __kmem_cache_alloc_node+0x1e9/0x360\n    [\u003c00000000497fd30b\u003e] __kmalloc_node_track_caller+0x44/0x1a0\n    [\u003c000000003636c520\u003e] kstrdup+0x2d/0x60\n    [\u003c0000000032f84da2\u003e] kobject_set_name_vargs+0x1e/0x90\n    [\u003c0000000092efe493\u003e] dev_set_name+0x4e/0x70"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-04T08:45:29.276Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/f68c96821b61d2c71a35dbb8bf90c347fad624d9"
        },
        {
          "url": "https://git.kernel.org/stable/c/5a39382aa5411d64b25a71516c2c7480aab13bb7"
        },
        {
          "url": "https://git.kernel.org/stable/c/b47bb521961f027b4dcf8683337a7a1ba9e5ea1f"
        },
        {
          "url": "https://git.kernel.org/stable/c/0dd52e141afde089304de470148d311b05c14564"
        },
        {
          "url": "https://git.kernel.org/stable/c/8dddf2699da296c84205582aaead6b43dd7e8c4b"
        },
        {
          "url": "https://git.kernel.org/stable/c/656f670613662b6cc77aad14112db2803ad18fa8"
        },
        {
          "url": "https://git.kernel.org/stable/c/2c4e65285bdea23fd36d2ff376006ac64db6f42e"
        },
        {
          "url": "https://git.kernel.org/stable/c/efa17e90e1711bdb084e3954fa44afb6647331c0"
        }
      ],
      "title": "iio: trigger: sysfs: fix possible memory leak in iio_sysfs_trig_init()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49793",
    "datePublished": "2025-05-01T14:09:24.442Z",
    "dateReserved": "2025-05-01T14:05:17.224Z",
    "dateUpdated": "2025-05-04T08:45:29.276Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}


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