Vulnerability in Linux

CVE-2023-53794

In the Linux kernel, the following vulnerability has been resolved: cifs: fix session state check in reconnect to avoid use-after-free issue Don't collect exiting session in smb2_reconnect_server(), because it will be released soon. Note that the exiting session will stay in server->smb_ses_list until it complete the cifs_free_ipc() and logoff() and then delete itself from the list.

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 (41.2th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 41st percentile — 41.2% 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-2023-53794: 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 4fcd1813e6404dd4420c7d12fb483f9320f0bf93, 4ce7aa4e44d88ce64ea8ae2337b8910f3670b0ba, 419fad68e4c4135ff9859e9214dd6cf954413ca1

References

Frequently asked questions

What is CVE-2023-53794?
CVE-2023-53794 is a critical-severity vulnerability in Linux. CVSS score: 9.8/10. Published 2025-12-09.
How severe is CVE-2023-53794?
Critical severity. CVSS v3 base score is 9.8 out of 10.