PT-2025-49481 · Linux+4 · Linux Kernel+4

CVE-2023-53751

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Published

2023-04-21

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Updated

2026-08-23

CVSS v3.1

9.8

Critical

VectorAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)
Description The Linux kernel contains a flaw within the CIFS implementation related to the TCP Server Info::hostname component. Specifically, the hostname may be updated during reconnect attempts, creating a potential use-after-free condition if accessed outside of the reconnect process. This could lead to system instability or compromise.
Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Use After Free

Race Condition

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Weakness Enumeration

Related Identifiers

BDU:2026-10612
CVE-2023-53751
RHSA-2024:2394
RHSA-2025:19447
RHSA-2026:1512
RHSA-2026:1886
RHSA-2026:1909
RHSA-2026:1946
RHSA-2026:2490
RHSA-2026:2535
RHSA-2026:2573
RHSA-2026:2577
SUSE-SU-2026:0263-1
SUSE-SU-2026:0317-1
SUSE-SU-2026:0411-1
SUSE-SU-2026:0473-1
SUSE-SU-2026:0617-1

Affected Products

Centos
Debian
Linux Kernel
Red Hat
Red Os