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FKIE_CVE-2026-72058

Vulnerability from fkie_nvd - Published: 2026-08-15 06:21 - Updated: 2026-08-23 13:16
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: net: ixp4xx_hss: fix duplicate HDLC netdev allocation ixp4xx_hss_probe() allocates two HDLC netdevs. The first one is stored in ndev, initialized, and registered with register_hdlc_device(). The second one is stored in port->netdev and later used by the remove path for unregister_hdlc_device() and free_netdev(). This means that the registered netdev is not the same object that is unregistered and freed on remove. It also leaks the first allocation if the second alloc_hdlcdev() call fails, and the first allocation is not checked before ndev is used. Older code allocated the HDLC netdev only once and stored the same object in both the local variable and port->netdev. The buggy conversion split this into two alloc_hdlcdev() calls. A later rename changed the local variable name to ndev, but the underlying mismatch remained. Fix this by allocating the HDLC netdev only once and assigning the same object to port->netdev.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3f85fcd520aa703824b1958f35169925ddae2558
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/77d925b948ee594a79afe66f85bb94b67940140b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8f4c3c384092becbf4835a3f8ed8a3df1f544578
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/91850f582783098415a334f8bd0a84c87ff15a8c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/db818b0e8af7bac16860116a19c341a63d6677b4
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fd0b939ebd1eee29945a539c5ed65c35dddac8d6
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ffba16e6f55948d94b7f16aa113d587c1c4c0643
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wan/ixp4xx_hss.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "77d925b948ee594a79afe66f85bb94b67940140b",
              "status": "affected",
              "version": "99ebe65eb9c0ada015931d239d9f2d1dc8897fee",
              "versionType": "git"
            },
            {
              "lessThan": "8f4c3c384092becbf4835a3f8ed8a3df1f544578",
              "status": "affected",
              "version": "99ebe65eb9c0ada015931d239d9f2d1dc8897fee",
              "versionType": "git"
            },
            {
              "lessThan": "fd0b939ebd1eee29945a539c5ed65c35dddac8d6",
              "status": "affected",
              "version": "99ebe65eb9c0ada015931d239d9f2d1dc8897fee",
              "versionType": "git"
            },
            {
              "lessThan": "ffba16e6f55948d94b7f16aa113d587c1c4c0643",
              "status": "affected",
              "version": "99ebe65eb9c0ada015931d239d9f2d1dc8897fee",
              "versionType": "git"
            },
            {
              "lessThan": "3f85fcd520aa703824b1958f35169925ddae2558",
              "status": "affected",
              "version": "99ebe65eb9c0ada015931d239d9f2d1dc8897fee",
              "versionType": "git"
            },
            {
              "lessThan": "91850f582783098415a334f8bd0a84c87ff15a8c",
              "status": "affected",
              "version": "99ebe65eb9c0ada015931d239d9f2d1dc8897fee",
              "versionType": "git"
            },
            {
              "lessThan": "db818b0e8af7bac16860116a19c341a63d6677b4",
              "status": "affected",
              "version": "99ebe65eb9c0ada015931d239d9f2d1dc8897fee",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wan/ixp4xx_hss.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.14"
            },
            {
              "lessThan": "5.14",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.217",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.178",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.145",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.97",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.40",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ixp4xx_hss: fix duplicate HDLC netdev allocation\n\nixp4xx_hss_probe() allocates two HDLC netdevs. The first one is stored\nin ndev, initialized, and registered with register_hdlc_device(). The\nsecond one is stored in port-\u003enetdev and later used by the remove path\nfor unregister_hdlc_device() and free_netdev().\n\nThis means that the registered netdev is not the same object that is\nunregistered and freed on remove. It also leaks the first allocation if\nthe second alloc_hdlcdev() call fails, and the first allocation is not\nchecked before ndev is used.\n\nOlder code allocated the HDLC netdev only once and stored the same object\nin both the local variable and port-\u003enetdev. The buggy conversion split\nthis into two alloc_hdlcdev() calls. A later rename changed the local\nvariable name to ndev, but the underlying mismatch remained.\n\nFix this by allocating the HDLC netdev only once and assigning the same\nobject to port-\u003enetdev."
    }
  ],
  "id": "CVE-2026-72058",
  "lastModified": "2026-08-23T13:16:38.720",
  "metrics": {},
  "published": "2026-08-15T06:21:15.260",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/3f85fcd520aa703824b1958f35169925ddae2558"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/77d925b948ee594a79afe66f85bb94b67940140b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/8f4c3c384092becbf4835a3f8ed8a3df1f544578"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/91850f582783098415a334f8bd0a84c87ff15a8c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/db818b0e8af7bac16860116a19c341a63d6677b4"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/fd0b939ebd1eee29945a539c5ed65c35dddac8d6"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ffba16e6f55948d94b7f16aa113d587c1c4c0643"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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