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.

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.

EPSS: 0.002 (6.3th percentile) — read the EPSS interpretation.

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.

Affected products

Linux — versions 93d5cb517db39e8af8d1292f9e785e4983b7f708, 5.0, 0

References

416baaa9-dc9f-4396-8d5f-8c081fb06d67
416baaa9-dc9f-4396-8d5f-8c081fb06d67
416baaa9-dc9f-4396-8d5f-8c081fb06d67
416baaa9-dc9f-4396-8d5f-8c081fb06d67

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.