CVE-2026-46103 (GCVE-0-2026-46103)
Vulnerability from cvelistv5
Published
2026-05-27 12:59
Modified
2026-06-14 17:54
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: can: ucan: fix devres lifetime USB drivers bind to USB interfaces and any device managed resources should have their lifetime tied to the interface rather than parent USB device. This avoids issues like memory leaks when drivers are unbound without their devices being physically disconnected (e.g. on probe deferral or configuration changes). Fix the control message buffer lifetime so that it is released on driver unbind.
Impacted products
Vendor Product Version
Linux Linux Version: 9f2d3eae88d26c29d96e42983b755940d9169cd9
Version: 9f2d3eae88d26c29d96e42983b755940d9169cd9
Version: 9f2d3eae88d26c29d96e42983b755940d9169cd9
Version: 9f2d3eae88d26c29d96e42983b755940d9169cd9
Version: 9f2d3eae88d26c29d96e42983b755940d9169cd9
Version: 9f2d3eae88d26c29d96e42983b755940d9169cd9
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{
  "containers": {
    "cna": {
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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/can/usb/ucan.c"
          ],
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            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.19"
            },
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
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              "status": "unaffected",
              "version": "6.1.175",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
              "version": "6.6.140",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.86",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.27",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.175",
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                  "vulnerable": true
                },
                {
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                  "versionEndExcluding": "6.6.140",
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              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: ucan: fix devres lifetime\n\nUSB drivers bind to USB interfaces and any device managed resources\nshould have their lifetime tied to the interface rather than parent USB\ndevice. This avoids issues like memory leaks when drivers are unbound\nwithout their devices being physically disconnected (e.g. on probe\ndeferral or configuration changes).\n\nFix the control message buffer lifetime so that it is released on driver\nunbind."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-14T17:54:39.297Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/3df5b9110ac08f67ccfe382fc172bfee95688eec"
        },
        {
          "url": "https://git.kernel.org/stable/c/4b7d07747400cfd7eff1ba7b8b5a7c8d5a58f705"
        },
        {
          "url": "https://git.kernel.org/stable/c/10b7b676b78a7bd888d19729b459aad7fc1f428b"
        },
        {
          "url": "https://git.kernel.org/stable/c/c524c124e3094d2de12235a513854c03d06a2b58"
        },
        {
          "url": "https://git.kernel.org/stable/c/c0d3ccc6929e4509076df8f30a4fb1dc5018b0ae"
        },
        {
          "url": "https://git.kernel.org/stable/c/fed4626501c871890da287bec62a96e52da1af89"
        }
      ],
      "title": "can: ucan: fix devres lifetime",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-46103",
    "datePublished": "2026-05-27T12:59:11.533Z",
    "dateReserved": "2026-05-13T15:03:33.097Z",
    "dateUpdated": "2026-06-14T17:54:39.297Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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