CVE-2024-35880

Published May 19, 2024

Last updated 7 months ago

CVSS medium 5.5
Linux Kernel

Overview

Description
In the Linux kernel, the following vulnerability has been resolved: io_uring/kbuf: hold io_buffer_list reference over mmap If we look up the kbuf, ensure that it doesn't get unregistered until after we're done with it. Since we're inside mmap, we cannot safely use the io_uring lock. Rely on the fact that we can lookup the buffer list under RCU now and grab a reference to it, preventing it from being unregistered until we're done with it. The lookup returns the io_buffer_list directly with it referenced.
Source
416baaa9-dc9f-4396-8d5f-8c081fb06d67
NVD status
Analyzed
Products
linux_kernel

Risk scores

CVSS 3.1

Type
Primary
Base score
5.5
Impact score
3.6
Exploitability score
1.8
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Severity
MEDIUM

Weaknesses

nvd@nist.gov
NVD-CWE-noinfo

Social media

Hype score
Not currently trending

  1. 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

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Configurations

Related CVEs

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References

Sources include official advisories and independent security research.