CVE-2023-1295

HIGH

Linux Kernel 5.6-5.11 - Privilege Escalation via io_uring IORING_OP_CLOSE TOCTOU

Title source: llm
STIX 2.1

Description

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.

References (6)

Core 6

Scores

CVSS v3 7.8
EPSS 0.0002
EPSS Percentile 6.4%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-367
Status published
Products (6)
linux/linux_kernel 5.6 - 5.10.162
netapp/h300s
netapp/h410c
netapp/h410s
netapp/h500s
netapp/h700s
Published Jun 28, 2023
Tracked Since Feb 18, 2026