CVE-2023-53381 — Improper Update of Reference Count in Linux

CWE-911 — Improper Update of Reference Count5 documents5 sources
Severity
5.5MEDIUMNVD
EPSS
0.0%
top 95.84%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
LinuxLinux KernelDebian Linux
Timeline
PublishedSep 18

Description

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.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6

Affected Packages4 packages

▶NVDlinux/linux_kernel5.14 — 5.15.154+2
▶Debianlinux/linux_kernel< 5.10.221-1+3
▶CVEListV5linux/linuxa4bc287943f5695209ff36bdc89f17b48d68fae7 — 2da50149981d05955e51c28e982e9ac29bd73417+5
▶debiandebian/linux< linux 6.1.20-1 (bookworm)

Patches

Patch: git.kernel.org ↗Patch: git.kernel.org ↗Patch: git.kernel.org ↗

🔴Vulnerability Details

2
GHSA
GHSA-593m-cjxc-9623: In the Linux kernel, the following vulnerability has been resolved: NFSD: fix leaked reference count of nfsd4_ssc_umount_item The reference count of↗2025-09-18
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OSV
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 n↗2025-09-18
▶

📋Vendor Advisories

2
Red Hat
kernel: NFSD: fix leaked reference count of nfsd4_ssc_umount_item↗2025-09-18
▶
Debian
CVE-2023-53381: linux - In the Linux kernel, the following vulnerability has been resolved: NFSD: fix l...↗2023
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CVE-2023-53381 — Improper Update of Reference Count | cvebase