Security Advisory

CVE-2026-45962

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-05-27 12:18:19

Last updated 2026-05-27 12:18:19

Assigner Linux

CVSS score not scored

State PUBLISHED

Description

In the Linux kernel, the following vulnerability has been resolved: ublk: Validate SQE128 flag before accessing the cmd ublk_ctrl_cmd_dump() accesses (header *)sqe->cmd before IO_URING_F_SQE128 flag check. This could cause out of boundary memory access. Move the SQE128 flag check earlier in ublk_ctrl_uring_cmd() to return -EINVAL immediately if the flag is not set.

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