net: bonding: fix NULL pointer dereference in bond_do_ioctl()
Summary
| CVE | CVE-2026-53337 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-07-01 14:16:41 UTC |
| Updated | 2026-07-01 14:16:41 UTC |
| Description | 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. |
Risk And Classification
EPSS: 0.001640000 probability, percentile 0.059780000 (date 2026-07-04)
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected e2a7420df2e01370b40e4cf7b85ab9a885c6d755 1b7558c85493467b2ea20738866b822db6442034 git | Not specified |
| CNA | Linux | Linux | affected e2a7420df2e01370b40e4cf7b85ab9a885c6d755 b02b2e3e876c18733b868a29064abd11cdbf8feb git | Not specified |
| CNA | Linux | Linux | affected e2a7420df2e01370b40e4cf7b85ab9a885c6d755 66693957bacd1c9dae6188a7312d6be69a221f2d git | Not specified |
| CNA | Linux | Linux | affected e2a7420df2e01370b40e4cf7b85ab9a885c6d755 a629418d463fb50d132a1aa063b0105857311e5f git | Not specified |
| CNA | Linux | Linux | affected e2a7420df2e01370b40e4cf7b85ab9a885c6d755 c2cfe290fdb1c32a4f4eb2b8ca3f363b305d21ba git | Not specified |
| CNA | Linux | Linux | affected e2a7420df2e01370b40e4cf7b85ab9a885c6d755 bcb8fad90f27300add583a8371db504b766d95c7 git | Not specified |
| CNA | Linux | Linux | affected e2a7420df2e01370b40e4cf7b85ab9a885c6d755 b0878106ddc486375084145848ff255dedfff46a git | Not specified |
| CNA | Linux | Linux | affected e2a7420df2e01370b40e4cf7b85ab9a885c6d755 a764b0e8317a863006e05732e1aefe821b9d8c2d git | Not specified |
| CNA | Linux | Linux | affected 5.3 | Not specified |
| CNA | Linux | Linux | unaffected 5.3 semver | Not specified |
| CNA | Linux | Linux | unaffected 5.10.259 5.10.* semver | Not specified |
| CNA | Linux | Linux | unaffected 5.15.210 5.15.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.1.176 6.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.143 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.94 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18.36 6.18.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.0.13 7.0.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.1 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/c2cfe290fdb1c32a4f4eb2b8ca3f363b305d21ba | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/a629418d463fb50d132a1aa063b0105857311e5f | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/b0878106ddc486375084145848ff255dedfff46a | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/a764b0e8317a863006e05732e1aefe821b9d8c2d | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/b02b2e3e876c18733b868a29064abd11cdbf8feb | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/66693957bacd1c9dae6188a7312d6be69a221f2d | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/1b7558c85493467b2ea20738866b822db6442034 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/bcb8fad90f27300add583a8371db504b766d95c7 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.