PT-2025-37674 · Linux+2 · Linux Kernel+2

Published 2023-03-15 · Updated 2026-04-14 · CVE-2023-53233

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 versions 6.1.0-20221027.rc2.git8.56bc5b569087.300.fc36.s390x+debug and earlier

Description The Linux kernel contained a deadlock vulnerability within the net/smc module, triggered by cancel delayed work syn(). The issue was identified through LOCKDEP detection, indicating a potential circular locking dependency. The deadlock involved workqueues and completion events related to the SMC (SMC) module, specifically during operations involving smc lgr free work, smc connect rdma, smc connect, and related functions. The detected locking scenario involved potential unsafe locking between CPU0 and CPU1, leading to a deadlock condition when acquiring multiple locks.

Recommendations Update to a newer version of the Linux kernel that addresses this issue.

Exploit

Fix

DoS

Improper Locking

Weakness Enumeration

CWE-833

CWE-667

Related Identifiers

BDU:2026-03805

CVE-2023-53233

RHSA-2023:6583

RHSA-2023:7077

Affected Products

Astra Linux

Linux Kernel

Red Os

References · 27

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53233.json · Exploit
• https://osv.dev/vulnerability/DEBIAN-CVE-2023-53233 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2023-53233 · Security Note
• https://git.kernel.org/stable/c/c9ca2257150272df1b8d9ebe5059197ffea6e913 · Patch
• https://git.kernel.org/stable/c/13085e1b5cab8ad802904d72e6a6dae85ae0cd20 · Patch
• https://git.kernel.org/stable/c/3517584cf1b35bd02f4a90267ddf9dcf17bd9c87 · Patch
• https://git.kernel.org/stable/c/b615238e5bc01e13dc0610febddc1ca99bab1df6 · Patch
• https://osv.dev/vulnerability/CVE-2023-53233 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-03805 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2023-53233 · Vendor Advisory
• https://git.kernel.org/stable/c/9708efad9ba5095b9bb7916e11a135b3bd66c071 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2023-53233 · Security Note
• https://osv.dev/vulnerability/BELL-CVE-2023-53233 · Vendor Advisory
• https://ubuntu.com/security/CVE-2023-53233 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-53233 · Vendor Advisory