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.
Fix
Microsoft's update · Critical
- Release Notes — azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 · build 6.6.158.1-1
From the 2026-Oct release note of Microsoft's Security Update Guide, revised 2026-10-29.
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 2
- StatusReceived → PublishedNVD modified 2026-10-19 09:17
- First seenCVSS 7.8NVD modified 2026-10-19 10:18
Affected (CPE criteria) 0
NVD has not attached CPE configurations yet.
References 8
- https://git.kernel.org/stable/c/293c56a66510bb7de073a1aba388e38abddff1fb
- https://git.kernel.org/stable/c/9ce26201f6dedf3fa02b97da8c67ee6f6c5f7225
- https://git.kernel.org/stable/c/b808a9af5fd21f9c68b0d024eda7535b5dce6a4e
- https://git.kernel.org/stable/c/ca49763c42c1089d654bf11b037980a9ede3772c
- https://git.kernel.org/stable/c/e5c8d7acd31b27057ea42cd405d0b3ece097bc89
- https://git.kernel.org/stable/c/e8304e25c6dabb8accf38b807969438d0ce84fd7
- https://git.kernel.org/stable/c/ee9ea1afd6990def51d52b3a0aecd5cfcc951da0
- https://git.kernel.org/stable/c/f9526054c2b2cace5916b7225603d008834ec011