PT-2025-37553 · Linux+3 · Linux Kernel+3

Published 2023-07-09 · Updated 2026-04-14 · CVE-2023-53189

Positive Technologies (AI Summary)

CVSS v2.0

6.0

Medium

Base vector

AV:L/AC:H/Au:S/C:C/I:C/A:C

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

Description A potential reference count underflow issue exists for idev within the IPv6 address configuration component of the Linux kernel. The issue occurs due to a timing gap during modification of the rs timer timeout, potentially leading to the addrconf rs timer() callback function being executed and releasing idev without a valid reference. This can result in a refcount underflow. The vulnerability is related to the addrconf mod rs timer() function and the rs timer within the idev structure.

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

Exploit

Integer Underflow

Double Free

Weakness Enumeration

CWE-191

CWE-415

Related Identifiers

BDU:2026-05995

CVE-2023-53189

SUSE-SU-2025:03600-1

SUSE-SU-2025:03614-1

SUSE-SU-2025:03615-1

SUSE-SU-2025:03634-1

SUSE-SU-2025:20851-1

SUSE-SU-2025:20861-1

SUSE-SU-2025:20870-1

SUSE-SU-2025:20898-1

SUSE-SU-2025:3751-1

SUSE-SU-2025:3761-1

SUSE-SU-2025:4057-1

SUSE-SU-2025:4132-1

SUSE-SU-2025:4141-1

Affected Products

Astra Linux

Linux Kernel

Red Os

Suse

References · 2038

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53189.json · Exploit
• https://osv.dev/vulnerability/SUSE-SU-2025:4057-1 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2023-53189 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:03614-1 · Vendor Advisory
• https://git.kernel.org/stable/c/1f656e483eb4733d62f18dfb206a49b78f60f495 · Patch
• https://osv.dev/vulnerability/SUSE-SU-2025:03615-1 · Vendor Advisory
• https://git.kernel.org/stable/c/c7eeba47058532f6077d6a658e38b6698f6ae71a · Patch
• https://git.kernel.org/stable/c/436b7cc7eae7851c184b671ed7a4a64c750b86f7 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2023-53189 · Security Note
• https://osv.dev/vulnerability/CVE-2023-53189 · Vendor Advisory
• https://git.kernel.org/stable/c/82abd1c37d3bf2a2658b34772c17a25a6f9cca42 · Patch
• https://git.kernel.org/stable/c/df62fdcd004afa72ecbed0e862ebb983acd3aa57 · Patch
• https://git.kernel.org/stable/c/c6395e32935d35e6f935e7caf1c2dac5a95943b4 · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-53189 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:20861-1 · Vendor Advisory