CVE-2023-1295: Linux Kernel

High severity, CVSS 7.0. EPSS: 0.2% chance of exploitation in the next 30 days.

A time-of-check to time-of-use issue exists in io_uring subsystem's IORING_OP_CLOSE operation in the Linux kernel's versions 5.6 - 5.11 (inclusive), which allows a local user to elevate their privileges to root. Introduced in b5dba59e0cf7e2cc4d3b3b1ac5fe81ddf21959eb, patched in 9eac1904d3364254d622bf2c771c4f85cd435fc2, backported to stable in 788d0824269bef539fe31a785b1517882eafed93.

Affected products

• Linux Linux Kernel: from 5.6, before 5.10.162 (fixed in 5.10.162); from 5.11, before 5.11.6 (fixed in 5.11.6)
• Netapp h300s: affected versions not specified
• Netapp h410c: affected versions not specified
• Netapp h410s: affected versions not specified
• Netapp h500s: affected versions not specified
• Netapp h700s: affected versions not specified

Published 2023-06-28. Last modified 2026-06-17.