Vulnerability in Linux

CVE-2023-54280

In the Linux kernel, the following vulnerability has been resolved: cifs: fix potential race when tree connecting ipc Protect access of TCP_Server_Info::hostname when building the ipc tree name as it might get freed in cifsd thread and thus causing an use-after-free bug in __tree_connect_dfs_target(). Also, while at it, update status of IPC tcon on success and then avoid any extra tree connects.

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: 0.005 (41.5th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 42nd percentile — 41.5% 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-2023-54280: held from 0.005 to 0.005.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: +0.000

Affected products

  • Linux — versions c88f7dcd6d6429197fc2fd87b54a894ffcd48e8e, 6.3.2, 6.4

References

Frequently asked questions

What is CVE-2023-54280?
CVE-2023-54280 is a critical-severity vulnerability in Linux. CVSS score: 9.8/10. Published 2025-12-30.
How severe is CVE-2023-54280?
Critical severity. CVSS v3 base score is 9.8 out of 10.