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.

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.

EPSS: 0.001 (3.4th percentile) — read the EPSS interpretation.

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.

Affected products

Linux — versions a4bc287943f5695209ff36bdc89f17b48d68fae7, f4e44b393389c77958f7c58bf4415032b4cda15b, 5.14
Linux Linux_kernel

References

416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)

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.