Tracker / CVE-2024-47748
CVE-2024-47748
In the Linux kernel, the following vulnerability has been resolved: vhost_vdpa: assign irq bypass producer token correctly We used to call irq_bypass_unregister_producer() in vhost_vdpa_setup_vq_irq() which is problematic as we don't know if the token pointer is still valid or not. Actually, we use the eventfd_ctx as the token so the life cycle of the token should be bound to the VHOST_SET_VRING_CALL instead of vhost_vdpa_setup_vq_irq() which could be called by set_status(). Fixing this by setting up irq bypass producer's token when handling VHOST_SET_VRING_CALL and un-registering the producer before calling vhost_vring_ioctl() to prevent a possible use after free as eventfd could have been released in vhost_vring_ioctl(). And such registering and unregistering will only be done if DRIVER_OK is set.
Prodotti e versioni affette
| linux | linux_kernel · 5.11 → 5.15.168 |
|---|---|
| linux | linux_kernel · 5.16 → 6.1.113 |
| linux | linux_kernel · 5.9 → 5.10.227 |
| linux | linux_kernel · 6.11 → 6.11.2 |
| linux | linux_kernel · 6.2 → 6.6.54 |
| linux | linux_kernel · 6.7 → 6.10.13 |