CVE-2023-53381: Linux Kernel

Medium severity, CVSS 5.5. EPSS: 0.3% chance of exploitation in the next 30 days.

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.

Affected products

• Linux Linux Kernel: from 5.14, before 5.15.154 (fixed in 5.15.154); from 5.16, before 6.1.16 (fixed in 6.1.16); from 6.2, before 6.2.3 (fixed in 6.2.3)

Published 2025-09-18. Last modified 2026-08-04.