CVE-2026-97973

high

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.

References

https://git.kernel.org/stable/c/e92a45b872b035c79acde8dd0da096a72b61ff2f

https://git.kernel.org/stable/c/c1de1e7b51ab2531f564b39b51998c3d71caccd7

https://git.kernel.org/stable/c/8558e3195664113c14a4d8fcf221b3caff41fed1

https://git.kernel.org/stable/c/7d059f390750152b9bd69df934198651b94fc26d

https://git.kernel.org/stable/c/23b6a44ffea1c54a4232aa86ee470b21422a8cc5

https://git.kernel.org/stable/c/0112aa02c7847314be599d68783d50c7e228a694

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-86827

Details

Source: Mitre, NVD

Published: 2026-09-25

Updated: 2026-10-03

Risk Information

CVSS v2

Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Severity: Critical

CVSS v3

Base Score: 8.4

Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: High

EPSS

EPSS: 0.00172