VULNERABILITY INTELLIGENCE

CVE-2023-2598

CVSS score7.8 HIGH
EPSS probability1.37%
CISA KEVNot currently listed
Published2023-06-01
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Description

A flaw was found in the fixed buffer registration code for io_uring (io_sqe_buffer_register in io_uring/rsrc.c) in the Linux kernel that allows out-of-bounds access to physical memory beyond the end of the buffer. This flaw enables full local privilege escalation.

Weakness classification

  • CWE-416: Use After Free
  • CWE-787: Out-of-bounds Write

Primary references