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CVE-2026-97973

Unknown

Last modified

CVE-2026-97973 is a vulnerability of currently unknown severity. In the Linux kernel, the following vulnerability has been resolved: net: macb: destroy the phylink instance on the probe error path macb_mii_init() creates a phylink instance on both of its success paths, but the probe unwind frees the netdev without destroying it, so a failing macb_alloc_tieoff() or register_netdev() leaks the instance. Destroy it at err_out_unregister_mdio, which is only reachable once macb_mii_init() has succeeded, so bp->phylink is valid there..

Description

In the Linux kernel, the following vulnerability has been resolved: net: macb: destroy the phylink instance on the probe error path macb_mii_init() creates a phylink instance on both of its success paths, but the probe unwind frees the netdev without destroying it, so a failing macb_alloc_tieoff() or register_netdev() leaks the instance. Destroy it at err_out_unregister_mdio, which is only reachable once macb_mii_init() has succeeded, so bp->phylink is valid there.

Affected Software

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

VendorProductVersions
LinuxLinux>= 7897b071ac3b45a5788d084fc7f8a8ee9e5f07f0, < 23b6a44ffea1c54a4232aa86ee470b21422a8cc5; >= 7897b071ac3b45a5788d084fc7f8a8ee9e5f07f0, < e92a45b872b035c79acde8dd0da096a72b61ff2f; >= 7897b071ac3b45a5788d084fc7f8a8ee9e5f07f0, < 8558e3195664113c14a4d8fcf221b3caff41fed1; >= 7897b071ac3b45a5788d084fc7f8a8ee9e5f07f0, < 7d059f390750152b9bd69df934198651b94fc26d
LinuxLinux5.5

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-97973?
In the Linux kernel, the following vulnerability has been resolved: net: macb: destroy the phylink instance on the probe error path macb_mii_init() creates a phylink instance on both of its success paths, but the probe unwind frees the netdev without destroying it, so a failing macb_alloc_tieoff() or register_netdev() leaks the instance. Destroy it at err_out_unregister_mdio, which is only reachable once macb_mii_init() has succeeded, so bp->phylink is valid there.
How severe is CVE-2026-97973?
Severity scoring for CVE-2026-97973 is pending analysis.
How do I fix CVE-2026-97973?
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