CVE Catalog

CVE-2026-72058

Low risk· EPSS 12%
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.22%

12th percentile - higher than 12% of all known CVEs

Summary

In the Linux kernel, the ixp4xx_hss driver's ixp4xx_hss_probe() allocates two HDLC netdevs, but registers one and removes another. This leads to memory leak and improper removal. The fix allocates only one netdev and assigns it to port->netdev.

Risk Assessment

Risk of memory leak and improper operation of HDLC interfaces, which can lead to network communication issues.

Recommendation

It is recommended to update the Linux kernel to a version containing the fix that eliminates the duplicate allocation.

Other vulnerabilities in Linux kernel

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Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS