Vulnerability in Linux

CVE-2023-53381

In the Linux kernel, the following vulnerability has been resolved: NFSD: fix leaked reference count of nfsd4_ssc_umount_item The reference count of nfsd4_ssc_umount_item is not decremented on error conditions. This prevents the laundromat from unmounting the vfsmount of the source file. This patch decrements the reference count of nfsd4_ssc_umount_item on error.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.003 (18.4th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 18th percentile — 18.4% 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-2023-53381: held from 0.003 to 0.003.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

  • Linux — versions a4bc287943f5695209ff36bdc89f17b48d68fae7, f4e44b393389c77958f7c58bf4415032b4cda15b, 5.14
  • Linux Kernel

References

Frequently asked questions

What is CVE-2023-53381?
CVE-2023-53381 is a high-severity vulnerability in Linux. CVSS score: 7.5/10. Published 2025-09-18.
How severe is CVE-2023-53381?
High severity. CVSS v3 base score is 7.5 out of 10.