CVE-2023-2598

kernel: io_uring out-of-bounds access to physical memory

Published Jun 1, 2023 CVSS 3.1 · 7.8 High EPSS 1.4% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2023-34072 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.
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
redhat
Published
Updated
Apr 23, 2025, 4:21 PM
Reserved
May 9, 2023, 12:00 AM
Status
Modified
Published
Jun 1, 2023, 1:15 AM
Modified
Jun 17, 2026, 5:52 AM
Severity
Moderate
Public date
May 3, 2023, 6:30 AM