CVE-2024-0582
kernel: io_uring: page use-after-free vulnerability via buffer ring mmap
Severity
ImportantRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · January 8, 2024
Updated · November 21, 2025
Description
A memory leak flaw was found in the Linux kernel’s io_uring functionality in how a user registers a buffer ring with IORING_REGISTER_PBUF_RING, mmap() it, and then frees it. This flaw allows a local user to crash or potentially escalate their privileges on the system.
Statement
Red Hat Enterprise Linux is not affected by this vulnerability as the upstream commit that introduced this flaw (c56e022 "io_uring: add support for user mapped provided buffer ring") is not included in any shipping kernel release.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
CVSS / CWE
CVSS 3.1 · 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-416 · Use After Free