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net: bonding: fix NULL pointer dereference in bond_do_ioctl()

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: net: bonding: fix NULL pointer dereference in bond_do_ioctl() In bond_do_ioctl(), slave_dev is obtained via __dev_get_by_name() which can return NULL if the requested interface name does not exist. However, the subsequent slave_dbg() call is placed before the NULL check: slave_dev = __dev_get_by_name(net, ifr->ifr_slave); slave_dbg(bond_dev, slave_dev, "slave_dev=%p:\n", slave_dev); //here if (!slave_dev) return -ENODEV; The slave_dbg() macro expands to netdev_dbg(bond_dev, "(slave %s): " fmt, (slave_dev)->name, ...) which unconditionally dereferences slave_dev->name before the NULL check is performed. This results in a NULL pointer dereference kernel oops when a user calls bonding ioctl (e.g. SIOCBONDENSLAVE, SIOCBONDRELEASE, etc.) with a non-existent slave interface name. This is reachable from userspace via the bonding ioctl interface with CAP_NET_ADMIN capability, making it a potential local denial-of-service vector. Fix by moving the slave_dbg() call after the NULL check.

Announced Source revision 1
Original source ↗

CVE-2026-53337

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-53337

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "e2a7420df2e01370b40e4cf7b85ab9a885c6d755",
        "lessThan": "1b7558c85493467b2ea20738866b822db6442034",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "e2a7420df2e01370b40e4cf7b85ab9a885c6d755",
        "lessThan": "b02b2e3e876c18733b868a29064abd11cdbf8feb",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "e2a7420df2e01370b40e4cf7b85ab9a885c6d755",
        "lessThan": "66693957bacd1c9dae6188a7312d6be69a221f2d",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "e2a7420df2e01370b40e4cf7b85ab9a885c6d755",
        "lessThan": "a629418d463fb50d132a1aa063b0105857311e5f",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "e2a7420df2e01370b40e4cf7b85ab9a885c6d755",
        "lessThan": "c2cfe290fdb1c32a4f4eb2b8ca3f363b305d21ba",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "e2a7420df2e01370b40e4cf7b85ab9a885c6d755",
        "lessThan": "bcb8fad90f27300add583a8371db504b766d95c7",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "e2a7420df2e01370b40e4cf7b85ab9a885c6d755",
        "lessThan": "b0878106ddc486375084145848ff255dedfff46a",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "e2a7420df2e01370b40e4cf7b85ab9a885c6d755",
        "lessThan": "a764b0e8317a863006e05732e1aefe821b9d8c2d",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/net/bonding/bond_main.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "5.3"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "5.3",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.259",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.210",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.176",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.143",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.94",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.36",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.0.13",
        "versionType": "semver",
        "lessThanOrEqual": "7.0.*"
      },
      {
        "status": "unaffected",
        "version": "7.1",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/net/bonding/bond_main.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-53337

Source reference: /cveMetadata/cveId

Publisher severity

No explicit severity was provided.

Event
#28450 · Revision 1
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Publisher date
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