CVSS 7.8 · High EPSS 0,26%
Kerentanan Out-of-bounds Write pada linux kernel. Skor CVSS 3.1 7.8 (High) menurut NVD.
In the Linux kernel, the following vulnerability has been resolved: comedi: vmk80xx: fix transfer-buffer overflows The driver uses endpoint-sized USB transfer buffers but up until recently had no sanity checks on the sizes. Commit e1f13c879a7c ("staging: comedi: check validity of wMaxPacketSize of usb endpoints found") inadvertently fixed NULL-pointer dereferences when accessing the transfer buffers in case a malicious device has a zero wMaxPacketSize. Make sure to allocate buffers large enough to handle also the other accesses that are done without a size check (e.g. byte 18 in vmk80xx_cnt_insn_read() for the VMK8061_MODEL) to avoid writing beyond the buffers, for example, when doing descriptor fuzzing. The original driver was for a low-speed device with 8-byte buffers. Support was later added for a device that uses bulk transfers and is presumably a full-speed device with a maximum 64-byte wMaxPacketSize.
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 2.6.31 hingga sebelum 4.4.292 |
| linux | linux kernel | Versi 4.5 hingga sebelum 4.9.290 |
| linux | linux kernel | Versi 4.10 hingga sebelum 4.14.255 |
| linux | linux kernel | Versi 4.15 hingga sebelum 4.19.217 |
| linux | linux kernel | Versi 4.20 hingga sebelum 5.4.159 |
| linux | linux kernel | Versi 5.5 hingga sebelum 5.10.79 |
| linux | linux kernel | Versi 5.11 hingga sebelum 5.14.18 |
| linux | linux kernel | Versi 5.15 hingga sebelum 5.15.2 |