Vulnerability in Linux

CVE-2023-53751

In the Linux kernel, the following vulnerability has been resolved: cifs: fix potential use-after-free bugs in TCP_Server_Info::hostname TCP_Server_Info::hostname may be updated once or many times during reconnect, so protect its access outside reconnect path as well and then prevent any potential use-after-free bugs.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.004 (33.2th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 33rd percentile — 33.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2023-53751: held from 0.004 to 0.004.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.000

Affected products

  • Linux — versions 93d5cb517db39e8af8d1292f9e785e4983b7f708, 5.0, 0

References

Frequently asked questions

What is CVE-2023-53751?
CVE-2023-53751 is a critical-severity vulnerability in Linux. CVSS score: 9.8/10. Published 2025-12-08.
How severe is CVE-2023-53751?
Critical severity. CVSS v3 base score is 9.8 out of 10.