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CVE-2026-72058

UnknownEPSS 0.21%

Last modified

CVE-2026-72058 is a vulnerability of currently unknown severity. 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(). EPSS estimates a 0.21% chance of exploitation in the next 30 days.

Description

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.

Metrics

EPSS Probability
0.21%

12.1th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 99ebe65eb9c0ada015931d239d9f2d1dc8897fee, < 77d925b948ee594a79afe66f85bb94b67940140b; >= 99ebe65eb9c0ada015931d239d9f2d1dc8897fee, < 8f4c3c384092becbf4835a3f8ed8a3df1f544578; >= 99ebe65eb9c0ada015931d239d9f2d1dc8897fee, < fd0b939ebd1eee29945a539c5ed65c35dddac8d6; >= 99ebe65eb9c0ada015931d239d9f2d1dc8897fee, < ffba16e6f55948d94b7f16aa113d587c1c4c0643; >= 99ebe65eb9c0ada015931d239d9f2d1dc8897fee, < 3f85fcd520aa703824b1958f35169925ddae2558; >= 99ebe65eb9c0ada015931d239d9f2d1dc8897fee, < 91850f582783098415a334f8bd0a84c87ff15a8c; >= 99ebe65eb9c0ada015931d239d9f2d1dc8897fee, < db818b0e8af7bac16860116a19c341a63d6677b4
LinuxLinux5.14

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-72058?
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.
How severe is CVE-2026-72058?
Severity scoring for CVE-2026-72058 is pending analysis. The EPSS model estimates a 0.21% probability of exploitation in the next 30 days.
How do I fix CVE-2026-72058?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST