nfsd: fix nfsd_file leak on inter-server COPY setup failure
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 5 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat.
Summary
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.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.10.273, 5.15.224, 6.1.191, 6.6.160, 6.12.109, 6.18.50, 7.2.4, 7.3
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 10 | Affected | No fix yet |
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 9 | Affected | No fix yet |
| Red Hat OpenShift Container Platform 4 | Affected | No fix yet |
| Red Hat OpenShift Container Platform 5 | Affected | No fix yet |
Not affected: 3 products
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat OpenShift Container Platform 4
Timeline
- 2026-10-02 Threatist record created from CVE-2026-89680
- 2026-10-03 Alias added: GHSA-x88v-7xqf-ff34
- 2026-10-05 EPSS moved to the below the 50th percentile
- 2026-10-14 EPSS moved to the 50th–90th percentile
- 2026-10-19 Fix available: Linux/[email protected] · CNA
- 2026-10-21 Fix available: Linux/[email protected], Linux/Linux@ab949252fdf102ae74329a0caa7995a849d0dafa · CNA
- 2026-10-21 1 new reference · CNA
- 2026-10-29 CVSS score changed · Red Hat
- 2026-10-30 Affected versions changed · Red Hat
- 2026-10-30 Fix available: Linux/[email protected], Linux/[email protected], Linux/[email protected] +3 · CNA
- 2026-10-30 3 new references · CNA
References
Other 8
- https://git.kernel.org/stable/c/d15f76fddc5d0215db5f18851048376a1ea79bd6
- https://git.kernel.org/stable/c/eb22420e5bd6eb3afa1f840036bb08a7ac90db76
- https://git.kernel.org/stable/c/94c28af6fd89cb204975e49b824f8ee521bb84e9
- https://git.kernel.org/stable/c/ab949252fdf102ae74329a0caa7995a849d0dafa
- https://git.kernel.org/stable/c/1a6a41b848455bf6ba2c9da2dfb0730e608ce7ab
- https://git.kernel.org/stable/c/424d5c95108a4809b832cb0a312c61de4aec0078
- https://git.kernel.org/stable/c/6ed8d6de7ec90c4ba84eb82673058f506e5777fd
- https://git.kernel.org/stable/c/88a76145451d703eedd867b5989bf73d17340399
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Sources
- CVE-2026-89680 · CVE Program
- CVE-2026-89680 · NVD
- FIRST EPSS
- GHSA-x88v-7xqf-ff34 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-89680 · Red Hat security data · CC BY 4.0
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