PT-2024-21500 · Linux+4 · Linux Kernel+4

Mikulas Patocka · Published 2024-02-15 · Updated 2026-05-26 · CVE-2024-26757

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A vulnerability in the Linux kernel has been resolved, related to the handling of read-only arrays in the md check recovery() function. Usually, if the array is not read-write, md check recovery() won't register a new sync thread. However, after a specific commit, a hang can be triggered when the array is set to read-only and then back to read-write, causing the daemon thread to be unable to unregister the sync thread. The root cause is that dm-raid manipulates the mddev->ro variable by itself, but it should stop the sync thread before setting the array read-only.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

DoS

Improper Resource Release

RCE

Weakness Enumeration

CWE-404

CWE-20

Related Identifiers

ALSA-2025_12746

ALSA-2025_12752

ALSA-2025_12753

ALSA-2025_16880

ALT-PU-2025-12647

AZL-59480

AZL-59487

BDU:2025-03611

CVE-2024-26757

ECHO-B5A4-D8F3-22DF

INFSA-2024_9315

RHSA-2024:9315

RHSA-2024_9315

SUSE-SU-2024:2135-1

Affected Products

Alt Linux

Debian

Linux Kernel

Red Hat

Suse

References · 964

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/26xxx/CVE-2024-26757.json · Exploit
• https://osv.dev/vulnerability/ROOT-OS-DEBIAN-11-CVE-2024-26757 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2024-26757 · Vendor Advisory
• https://git.kernel.org/stable/c/2ea169c5a0b1134d573d07fc27a16f327ad0e7d3 · Patch
• https://ubuntu.com/security/CVE-2024-26757 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2024-26757 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2024-26757 · Security Note
• https://linux.oracle.com/errata/ELSA-2024-9315.html · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2024-26757 · Security Note
• https://osv.dev/vulnerability/AZL-59487 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-OS-UBUNTU-2204-CVE-2024-26757 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-OS-DEBIAN-12-CVE-2024-26757 · Vendor Advisory
• https://git.kernel.org/stable/c/55a48ad2db64737f7ffc0407634218cc6e4c513b · Patch
• https://bdu.fstec.ru/vul/2025-03611 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2024-26757 · Vendor Advisory