CVSS 7.8 · High EPSS 0,23%
Kerentanan Use After Free pada linux kernel. Skor CVSS 3.1 7.8 (High) menurut CISA ADP.
In the Linux kernel, the following vulnerability has been resolved: usb: gadget: f_fs: Prevent race during ffs_ep0_queue_wait While performing fast composition switch, there is a possibility that the process of ffs_ep0_write/ffs_ep0_read get into a race condition due to ep0req being freed up from functionfs_unbind. Consider the scenario that the ffs_ep0_write calls the ffs_ep0_queue_wait by taking a lock &ffs->ev.waitq.lock. However, the functionfs_unbind isn't bounded so it can go ahead and mark the ep0req to NULL, and since there is no NULL check in ffs_ep0_queue_wait we will end up in use-after-free. Fix this by making a serialized execution between the two functions using a mutex_lock(ffs->mutex).
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
· uraikan di kalkulator | Vendor | Produk | Versi terdampak |
|---|---|---|
| linux | linux kernel | Versi 2.6.35 hingga sebelum 4.14.305 |
| linux | linux kernel | Versi 4.15 hingga sebelum 4.19.272 |
| linux | linux kernel | Versi 4.20 hingga sebelum 5.4.231 |
| linux | linux kernel | Versi 5.5 hingga sebelum 5.10.166 |
| linux | linux kernel | Versi 5.11 hingga sebelum 5.15.91 |
| linux | linux kernel | Versi 5.16 hingga sebelum 6.1.9 |
| linux | linux kernel | Versi 6.2 rc1 |
| linux | linux kernel | Versi 6.2 rc2 |
| linux | linux kernel | Versi 6.2 rc3 |
| linux | linux kernel | Versi 6.2 rc4 |