PT-2025-41068 · Linux+3 · Linux Kernel+3

Published 2023-04-21 · Updated 2025-11-24 · CVE-2023-53624

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 An integer overflow issue exists in the net/sched sch fq module when the "initial quantum" is configured with values greater than INT MAX. This overflow results in a negative value being assigned to "credit", potentially causing a CPU soft-lockup warning. The issue was identified through the use of the syzkaller script. Capping the "initial quantum" to INT MAX resolves the problem.

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

Exploit

Integer Overflow

Weakness Enumeration

CWE-190

Related Identifiers

ALSA-2025_16880

BDU:2026-03827

CESA-2023_7077

CVE-2023-53624

RHSA-2023:6583

RHSA-2023:7077

RHSA-2023_6583

RHSA-2023_7077

SUSE-SU-2025:4189-1

Affected Products

Centos

Linux Kernel

Red Hat

Suse

References · 315

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53624.json · Exploit
• https://bdu.fstec.ru/vul/2026-03827 · Security Note
• https://git.kernel.org/stable/c/d0b43125ec892aeb1b03e5df5aab595097da225a · Patch
• https://cve.org/CVERecord?id=CVE-2023-53624 · Security Note
• https://git.kernel.org/stable/c/2322462d6f9ad4874f4e3c63df3b5cc00cb1acbd · Patch
• https://git.kernel.org/stable/c/7041101ff6c3073fd8f2e99920f535b111c929cb · Patch
• https://git.kernel.org/stable/c/85f24cb2f10b2b0f2882e5786a09b4790bb3a0ad · Patch
• https://security-tracker.debian.org/tracker/CVE-2023-53624 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2023-53624 · Vendor Advisory
• https://git.kernel.org/stable/c/4fbefeab88c6e79753a25099d455d3d59d2946b4 · Patch
• https://git.kernel.org/stable/c/4b8a05e3801661a0438fcd0cdef181030d966a5a · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2023-53624 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:4189-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2023-53624 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2023-53624 · Vendor Advisory