CVE-2024-0582

Published Jan 16, 2024

Last updated 2 years ago

CVSS high 7.8
Linux Kernel

Overview

AI description

Automated description summarized from trusted sources.

CVE-2024-0582 is a memory leak flaw found in the Linux kernel's io_uring functionality. Specifically, the vulnerability lies in how a user registers a buffer ring with `IORING_REGISTER_PBUF_RING`, maps it using `mmap()`, and then frees it. The kernel allocates memory for the provided buffer ring, but it doesn't check if the memory has been unmapped in userspace before freeing it. This use-after-free vulnerability in the io_uring subsystem can be triggered when an application registers a provided buffer ring with the `IOU_PBUF_RING_MMAP` flag. When the application unregisters the buffer ring using the `IORING_UNREGISTER_PBUF_RING` opcode, the kernel frees the memory without checking if it has been unmapped in userspace.

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.
Source
secalert@redhat.com
NVD status
Modified
Products
linux_kernel

Risk scores

CVSS 3.1

Type
Primary
Base score
7.8
Impact score
5.9
Exploitability score
1.8
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Severity
HIGH

Weaknesses

secalert@redhat.com
CWE-416
nvd@nist.gov
CWE-416

Social media

Hype score
Not currently trending

  1. 🚨 [HIGH] Active exploitation detected: CVE-2024-0582 Exploit in the wild confirmed for CVE-2024-0582 (CVSS null). A memory leak flaw was found in the Linux kernel’s io_uring functionality in how a user r... 🔗 https://t.co/RZBhpWnHFz #ZeroDay #ExploitInWild #CyberSecurit

    @ctiwatchcloud

    13 Apr 2026

    39 Impressions

    0 Retweets

    0 Likes

    0 Bookmarks

    0 Replies

    0 Quotes

  2. Exploiting a use-after-free vulnerability in Linux kernel io_uring using Dirty Pagetable method (CVE-2024-0582) https://t.co/6n3IzHLaUR Credits @kuzeyardabulut #infosec #Linux https://t.co/3fVj9wqONp

    @0xor0ne

    20 May 2025

    4810 Impressions

    30 Retweets

    138 Likes

    45 Bookmarks

    0 Replies

    0 Quotes

  3. Analysis of io_uring pbuf Linux kernel vulnerabilities (CVE-2024-0582, CVE-2024-35880, CVE-2025-21836) https://t.co/B5uGC3XUa4 Credits @u1f383 #Linux #infosec https://t.co/z0WEHozprs

    @0xor0ne

    19 May 2025

    6540 Impressions

    44 Retweets

    160 Likes

    37 Bookmarks

    0 Replies

    0 Quotes

  4. 🚨 New Blog Post: Exploiting CVE-2024-0582 via the Dirty Page Table Method! Discover how dangling pages can corrupt Page Table Entries (PTEs) and redirect user-space memory to kernel-space. Read the full analysis: https://t.co/v0ftRqYkZB #ExploitDevelopment #KernelSecurity

    @kuzeyardabulut

    16 Apr 2025

    3865 Impressions

    19 Retweets

    82 Likes

    31 Bookmarks

    0 Replies

    0 Quotes

Configurations

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References

Sources include official advisories and independent security research.