PT-2026-43842 · Linux · Linux Kernel

Published 2026-05-27 · Updated 2026-05-27 · CVE-2026-45975

Positive Technologies (AI Summary)

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A race condition exists in the ublk component where the struct ublksrv ctrl cmd is accessed using normal loads. Because this structure is part of the io uring sqe, which may reside in userspace-mapped memory, userspace can write to its fields concurrently, leading to unstable behavior.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Related Identifiers

CVE-2026-45975

Affected Products

Linux Kernel

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2026-45975 · Security Note
• https://git.kernel.org/stable/c/ed9f54cc1e335096733aed03c2a46de3d58922ed · Note
• https://git.kernel.org/stable/c/ce63eda3e6d36e2c253febee1c8421ecbd1a680e · Note
• https://twitter.com/vuldb/status/2059657689962275162 · Twitter Post