CVE-2026-98311
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.
How to fix
- Linux Linuxee9ea1afd6990def51d52b3a0aecd5cfcc951da0, 9ce26201f6dedf3fa02b97da8c67ee6f6c5f7225, f9526054c2b2cace5916b7225603d008834ec011, e8304e25c6dabb8accf38b807969438d0ce84fd7, ca49763c42c1089d654bf11b037980a9ede3772c, 293c56a66510bb7de073a1aba388e38abddff1fb, b808a9af5fd21f9c68b0d024eda7535b5dce6a4e, e5c8d7acd31b27057ea42cd405d0b3ece097bc89 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | c7cdba31ed8b87526db978976392802d3f93110c ≤ v < ee9ea1afd6990def51d52b3a0aecd5cfcc951da0, c7cdba31ed8b87526db978976392802d3f93110c ≤ v < 9ce26201f6dedf3fa02b97da8c67ee6f6c5f7225, c7cdba31ed8b87526db978976392802d3f93110c ≤ v < f9526054c2b2cace5916b7225603d008834ec011, c7cdba31ed8b87526db978976392802d3f93110c ≤ v < e8304e25c6dabb8accf38b807969438d0ce84fd7, c7cdba31ed8b87526db978976392802d3f93110c ≤ v < ca49763c42c1089d654bf11b037980a9ede3772c, c7cdba31ed8b87526db978976392802d3f93110c ≤ v < 293c56a66510bb7de073a1aba388e38abddff1fb, c7cdba31ed8b87526db978976392802d3f93110c ≤ v < b808a9af5fd21f9c68b0d024eda7535b5dce6a4e, c7cdba31ed8b87526db978976392802d3f93110c ≤ v < e5c8d7acd31b27057ea42cd405d0b3ece097bc89, 5.0 | ee9ea1afd6990def51d52b3a0aecd5cfcc951da0, 9ce26201f6dedf3fa02b97da8c67ee6f6c5f7225, f9526054c2b2cace5916b7225603d008834ec011, e8304e25c6dabb8accf38b807969438d0ce84fd7, ca49763c42c1089d654bf11b037980a9ede3772c, 293c56a66510bb7de073a1aba388e38abddff1fb, b808a9af5fd21f9c68b0d024eda7535b5dce6a4e, e5c8d7acd31b27057ea42cd405d0b3ece097bc89 |
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