CVE-2023-53381
CVE-2023-53381 is a medium-severity vulnerability in Linux Linux Kernel with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.
Key facts
- Severity: Medium (CVSS 3.x base score 5.5)
- EPSS exploit prediction: 0% (3rd percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-29952
- Affected product: Linux Linux Kernel
- Published:
- Last modified:
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.
Frequently asked questions
- What is 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.
- How severe is CVE-2023-53381?
- CVE-2023-53381 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2023-53381 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (3rd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2023-53381?
- CVE-2023-53381 affects Linux Linux Kernel. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2023-53381?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2023-53381 have an EU (EUVD) identifier?
- Yes. CVE-2023-53381 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-29952.
- When was CVE-2023-53381 published?
- CVE-2023-53381 was published on 2025-09-18 and last updated on 2026-06-17.
References
- https://git.kernel.org/stable/c/2da50149981d05955e51c28e982e9ac29bd73417
- https://git.kernel.org/stable/c/34e8f9ec4c9ac235f917747b23a200a5e0ec857b
- https://git.kernel.org/stable/c/6c3c05402547aaca3edb23327b50f01a881831b9
- https://git.kernel.org/stable/c/80a15dc4a0214b55ca42675bb0bb2a8d857eb1d0
- https://git.kernel.org/stable/c/9f0df37520a27ad99eaacf38418b3d2bb5023105
Affected products (1)
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
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