CVE-2023-1295CWE-367

Privilege escalation with IO_RING_OP_CLOSE in the Linux Kernel

High · published June 28, 2023

CVSS v3.1
7.8
EPSS
0%
Percentile
11.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00218 · 11.6th percentile
Weakness
CWE-367 · Time-of-check Time-of-use (TOCTOU) Race Condition
Published
2023-06-28T11:08Z
EPSS history
Timeline
  • 28 JUN 11:08Z
    Privilege escalation with IO_RING_OP_CLOSE in the Linux Kernel
    cvelistv5