Description
In the Linux kernel, the following vulnerability has been resolved: wifi: virt_wifi: don't transfer operstate before register virt_wifi_newlink() calls netif_stacked_transfer_operstate() before register_netdevice(). If the lower device is dormant, that queues the new netdev on lweventlist while it is still uninitialized. If registration fails after that, for example because of an invalid name such as "bad/name", free_netdev() immediately frees the object. A later linkwatch_fire_event() then use-after-frees the list entry. Move the transfer to after netdev_upper_dev_link(), as macvlan and ipvlan already do.
References8
- git.kernel.org/stable/c/293c56a66510bb7de073a1aba388e38abddff1fb
- git.kernel.org/stable/c/9ce26201f6dedf3fa02b97da8c67ee6f6c5f7225
- git.kernel.org/stable/c/b808a9af5fd21f9c68b0d024eda7535b5dce6a4e
- git.kernel.org/stable/c/ca49763c42c1089d654bf11b037980a9ede3772c
- git.kernel.org/stable/c/e5c8d7acd31b27057ea42cd405d0b3ece097bc89
- git.kernel.org/stable/c/e8304e25c6dabb8accf38b807969438d0ce84fd7
- git.kernel.org/stable/c/ee9ea1afd6990def51d52b3a0aecd5cfcc951da0
- git.kernel.org/stable/c/f9526054c2b2cace5916b7225603d008834ec011
Metrics
- CVSS 3.1
-
7.8
HIGH
Score source: CNA
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 3 · as of 10 November 2026
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