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CVE PROGRAM SOURCE RECORDUnscored

CVE-2026-45975

ublk: use READ_ONCE() to read struct ublksrv_ctrl_cmd

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Status
Published
Published
Updated
Assigning organization
Linux

Description

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 products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 87213b0d847cd300285b5545598e0548baeb5208 to < ce63eda3e6d36e2c253febee1c8421ecbd1a680eaffected
  • 87213b0d847cd300285b5545598e0548baeb5208 to < ed9f54cc1e335096733aed03c2a46de3d58922edaffected

Linux Linux

Default version status: affected

  • 6.19affected
  • 0 to < 6.19unaffected
  • 6.19.4 to ≤ 6.19.*unaffected
  • 7.0 to ≤ *unaffected

References