CVE-2026-45975
published 2026-05-27CVE-2026-45975: In the Linux kernel, the following vulnerability has been resolved: ublk: use READ_ONCE() to read struct ublksrv_ctrl_cmd struct ublksrv_ctrl_cmd is part of…
high7
In the Linux kernel, the following vulnerability has been resolved:
ublk: use READ_ONCE() to read struct ublksrv_ctrl_cmd
struct ublksrv_ctrl_cmd is part of the io_uring_sqe, which may lie in
userspace-mapped memory. It's racy to access its fields with normal
loads, as userspace may write to them concurrently. Use READ_ONCE() to
copy the ublksrv_ctrl_cmd from the io_uring_sqe to the stack. Use the
local copy in place of the one in the io_uring_sqe.
Affected
4 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| linux | linux | — | — |
| linux | linux | >= 87213b0d847cd300285b5545598e0548baeb5208 < ce63eda3e6d36e2c253febee1c8421ecbd1a680e | ce63eda3e6d36e2c253febee1c8421ecbd1a680e |
| linux | linux | >= 87213b0d847cd300285b5545598e0548baeb5208 < ed9f54cc1e335096733aed03c2a46de3d58922ed | ed9f54cc1e335096733aed03c2a46de3d58922ed |
| linux | linux_kernel | — | — |