CVE-2026-45975

MEDIUM EPSS 1.4%
Published May 27, 20261mo ago · Modified Jun 17, 20262w ago
5.5 CVSS 3.1
Medium
Find Similar
Published May 27, 2026 1mo ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
1.4% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 1

VendorProductVersionRange
linuxlinux_kernel*≥6.19  –  <6.19.4

References 2

  • git.kernel.org https://git.kernel.org/stable/c/ce63eda3e6d36e2c253febee1c8421ecbd1a680e
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ed9f54cc1e335096733aed03c2a46de3d58922ed
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/ce63eda3e6d36e2c253febee1c8421ecbd1a680e
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ed9f54cc1e335096733aed03c2a46de3d58922ed
    Patch