01 Record

CVE-2023-53381

NFSD: fix leaked reference count of nfsd4_ssc_umount_item

HighPUBLISHEDCNA: Linux

CNA base score7.5 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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02 Description

NFSD: fix leaked reference count of nfsd4_ssc_umount_item

03 Exploitation and scoring

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.28% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 19.9% of scored records. A rank, not a probability.

NVD base score

5.5 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-08-04.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2025-09-18 13:33Z11 MO AGO

Last updated

2026-08-05 09:13Z1 MO AGO

Reserved

2025-09-17

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 7.5)

CNA CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weaknesses

CWE-911Improper Update of Reference CountBase

Data version

5.2

Document digest

c24b6cafff7a23f10f226f56a81730d3879abf3f6ce363ebef7d0bd44d635e16

05 Affected products

VendorProductVersionsPlatforms

LinuxLinuxa4bc287943f5695209ff36bdc89f17b48d68fae7 to < 2da50149981d05955e51c28e982e9ac29bd73417, f4e44b393389c77958f7c58bf4415032b4cda15b to < 80a15dc4a0214b55ca42675bb0bb2a8d857eb1d0, f4e44b393389c77958f7c58bf4415032b4cda15b to < 9f0df37520a27ad99eaacf38418b3d2bb5023105, f4e44b393389c77958f7c58bf4415032b4cda15b to < 6c3c05402547aaca3edb23327b50f01a881831b9, f4e44b393389c77958f7c58bf4415032b4cda15b to < 34e8f9ec4c9ac235f917747b23a200a5e0ec857b, 5.14—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/2da50149981d05955e51c28e982e9ac29bd73417
git.kernel.orghttps://git.kernel.org/stable/c/80a15dc4a0214b55ca42675bb0bb2a8d857eb1d0
git.kernel.orghttps://git.kernel.org/stable/c/9f0df37520a27ad99eaacf38418b3d2bb5023105
git.kernel.orghttps://git.kernel.org/stable/c/6c3c05402547aaca3edb23327b50f01a881831b9
git.kernel.orghttps://git.kernel.org/stable/c/34e8f9ec4c9ac235f917747b23a200a5e0ec857b

01 Record index

CVE-2023-53381

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2023-53381

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References