# CVE-2026-89680

## Summary

- **CVE ID:** CVE-2026-89680
- **Severity:** HIGH
- **CVSS Score:** 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
- **CWE:** N/A
- **Published:** Sep 11, 2026
- **Last Modified:** Sep 13, 2026

## Description

In the Linux kernel, the following vulnerability has been resolved:

nfsd: fix nfsd_file leak on inter-server COPY setup failure

When nfsd4_setup_inter_ssc() fails, nfsd4_copy() returns
nfserr_offload_denied directly, bypassing the out: label where
release_copy_files() would drop the nf_dst reference taken by
nfs4_preprocess_stateid_op(). Each failed inter-server COPY
leaks one nfsd_file, pinning file/inode/dentry/vfsmount.

Fix by setting status and jumping to out: instead of returning
directly.

## Affected Products

- Linux — Linux (ce0887ac96d35c7105090e166bb0807dc0a0e838)
- Linux — Linux (5.6)
- Linux — Linux (0)
- Linux — Linux (6.12.109)
- Linux — Linux (6.18.50)
- Linux — Linux (7.2.4)
- Linux — Linux (7.3-rc1)

## References

- [CNA](https://git.kernel.org/stable/c/1a6a41b848455bf6ba2c9da2dfb0730e608ce7ab)
- [CNA](https://git.kernel.org/stable/c/424d5c95108a4809b832cb0a312c61de4aec0078)
- [CNA](https://git.kernel.org/stable/c/6ed8d6de7ec90c4ba84eb82673058f506e5777fd)
- [CNA](https://git.kernel.org/stable/c/88a76145451d703eedd867b5989bf73d17340399)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.64%
- **EPSS Percentile:** 49.1

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._