CVE-2026-97973

Summary

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

VendorProductVersion RangeStatus
LinuxLinux7897b071ac3b45a5788d084fc7f8a8ee9e5f07f0 < 23b6a44ffea1c54a4232aa86ee470b21422a8cc5affected
LinuxLinux7897b071ac3b45a5788d084fc7f8a8ee9e5f07f0 < e92a45b872b035c79acde8dd0da096a72b61ff2faffected
LinuxLinux7897b071ac3b45a5788d084fc7f8a8ee9e5f07f0 < 8558e3195664113c14a4d8fcf221b3caff41fed1affected
LinuxLinux7897b071ac3b45a5788d084fc7f8a8ee9e5f07f0 < 7d059f390750152b9bd69df934198651b94fc26daffected
LinuxLinux5.5affected
LinuxLinux0 < 5.5unaffected
LinuxLinux6.12.111 <= 6.12.*unaffected
LinuxLinux6.18.53 <= 6.18.*unaffected
LinuxLinux7.2.7 <= 7.2.*unaffected
LinuxLinux7.3-rc3 <= *unaffected

Weaknesses

References